Coulomb’s Law |1 MARKS QUESTION | apna career

 Coulomb’s Law

Coulomb’s Law |1 MARKS QUESTION | apna career

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1. What is Coulomb’s Law?

Answer: It gives the force between two charges.
Explanation: It depends on charges and distance.

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2. State Coulomb’s Law.

Answer: Force is proportional to product of charges and inversely proportional to square of distance.
Explanation: Applies to point charges.

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3. Write the formula of Coulomb’s Law.

Answer:

$F=k\frac{q_1{q}_2}{r^2}$

$q_1$

$q_2$

$r$

$F=k\frac{q_1{q}_2}{r^2}\approx -5.06$

Charge and distance sliders update Coulomb force magnitude and direction.

Explanation: $k$ is constant.

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4. What is the SI unit of force in Coulomb’s Law?

Answer: Newton (N)
Explanation: Standard unit of force.

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5. What is Coulomb constant (k)?

Answer: $9\times {10}^{9}N{m}^2\mathrm{/}{C}^2$
Explanation: Value in vacuum.

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6. On what factors does Coulomb force depend?

Answer: Charges and distance.
Explanation: Direct with charges, inverse with square of distance.

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7. What happens if distance increases?

Answer: Force decreases.
Explanation: Inverse square relation.

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8. What happens if charge increases?

Answer: Force increases.
Explanation: Directly proportional.

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9. What type of force is Coulomb force?

Answer: Electrostatic force
Explanation: Acts between charges.

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10. Is Coulomb force attractive or repulsive?

Answer: Both
Explanation: Depends on charges.

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11. When is force attractive?

Answer: Between opposite charges
Explanation: + and – attract.

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12. When is force repulsive?

Answer: Between like charges
Explanation: Same charges repel.

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13. What is direction of Coulomb force?

Answer: Along line joining charges
Explanation: Straight line force.

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14. What is nature of Coulomb force?

Answer: Conservative
Explanation: Work is path independent.

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15. Does Coulomb law apply in medium?

Answer: Yes
Explanation: Value of $k$ changes.

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16. What happens to force in medium?

Answer: It decreases
Explanation: Due to permittivity.

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17. What is permittivity?

Answer: Property of medium
Explanation: Affects electric force.

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18. Write Coulomb law in medium.

Answer:
$F=\frac{1}{4\pi \epsilon }\frac{q_1{q}_2}{r^2}$
Explanation: $\epsilon$ = permittivity.

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19. What is inverse square law?

Answer: Force ∝ $\frac{1}{r^2}$
Explanation: Fundamental nature of Coulomb force.

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20. What is limitation of Coulomb’s Law?

Answer: Valid for point charges only
Explanation: Charges should be stationary and small.

21. What is vector form of Coulomb’s Law?

Answer:

$\vec{F}=k\frac{q_1{q}_2}{r^2}\widehat{r}$

$q_1$

$q_2$

$r$

$F=k\frac{q_1{q}_2}{r^2}\approx -5.06$

Charge and distance sliders update Coulomb force magnitude and direction.

Explanation: Direction is given by unit vector $\widehat{r}$.

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22. What does $\widehat{r}$ represent?

Answer: Unit vector
Explanation: Shows direction of force.

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23. What is effect of doubling both charges?

Answer: Force becomes 4 times
Explanation: $F\propto q_1{q}_2$

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24. What happens if distance is halved?

Answer: Force becomes 4 times
Explanation: Inverse square law.

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25. What happens if distance is tripled?

Answer: Force becomes $\frac{1}{9}$
Explanation: $F\propto \frac{1}{r^2}$

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26. What is nature of Coulomb force at large distance?

Answer: Weak
Explanation: Force decreases rapidly.

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27. What is nature at very small distance?

Answer: Strong
Explanation: Force increases significantly.

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28. What is superposition principle in Coulomb’s Law?

Answer: Net force is vector sum of forces.
Explanation: Applies for multiple charges.

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29. What is force between three charges?

Answer: Vector sum of pairwise forces
Explanation: Apply superposition.

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30. What is effect of medium on Coulomb force?

Answer: Reduces force
Explanation: Due to permittivity.

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31. What is relative permittivity?

Answer: Ratio $\frac{\epsilon }{{\epsilon }_0}$
Explanation: Also called dielectric constant.

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32. What is force in medium in terms of dielectric constant?

Answer:
$F=\frac{1}{K}\cdot k\frac{q_1{q}_2}{r^2}$
Explanation: $K$ reduces force.

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33. What is condition for maximum force?

Answer: Minimum distance
Explanation: Smaller $r$ → larger force.

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34. What is condition for zero force?

Answer: One charge is zero
Explanation: No interaction.

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35. What is direction of force for like charges?

Answer: Away from each other
Explanation: Repulsive force.

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36. What is direction for unlike charges?

Answer: Towards each other
Explanation: Attractive force.

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37. What is dimensional formula of Coulomb constant?

Answer: $[M{L}^3{T}^{-4}{I}^{-2}]$
Explanation: Derived from formula.

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38. Is Coulomb force central force?

Answer: Yes
Explanation: Acts along line joining charges.

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39. Is Coulomb force long-range or short-range?

Answer: Long-range
Explanation: Acts over large distances.

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40. Can Coulomb force act in vacuum?

Answer: Yes
Explanation: No medium required.

41. What is Coulomb force proportional to?

Answer: Product of charges
Explanation: $F\propto q_1{q}_2$

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42. What is Coulomb force inversely proportional to?

Answer: Square of distance
Explanation: $F\propto \frac{1}{r^2}$

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43. What is effect if one charge is doubled?

Answer: Force doubles
Explanation: Direct proportionality.

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44. What is effect if both charges are halved?

Answer: Force becomes one-fourth
Explanation: $F\propto q_1{q}_2$

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45. What happens if distance becomes zero?

Answer: Force becomes infinite
Explanation: Not physically possible.

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46. What is Coulomb force between neutral bodies?

Answer: Zero
Explanation: No net charge.

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47. What is sign of force between unlike charges?

Answer: Negative (attractive)
Explanation: Indicates attraction.

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48. What is sign of force between like charges?

Answer: Positive (repulsive)
Explanation: Indicates repulsion.

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49. What is unit of charge used in Coulomb’s law?

Answer: Coulomb (C)
Explanation: SI unit.

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50. What is distance measured in?

Answer: Meter (m)
Explanation: SI unit of length.

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51. What is value of $\frac{1}{4\pi {\epsilon }_0}$?

Answer: $9\times {10}^9$
Explanation: Coulomb constant.

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52. What is electric force nature compared to gravitational force?

Answer: Much stronger
Explanation: Electrostatic force is very strong.

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53. What is dependence of Coulomb force on medium?

Answer: Depends on permittivity
Explanation: Different media reduce force.

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54. What is dielectric constant symbol?

Answer: $K$
Explanation: Represents medium property.

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55. What is effect of increasing dielectric constant?

Answer: Force decreases
Explanation: $F\propto \frac{1}{K}$

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56. What is relation between force and permittivity?

Answer:
$F\propto \frac{1}{\epsilon }$
Explanation: Higher permittivity → lower force.

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57. What is force direction in vector form?

Answer: Along line joining charges
Explanation: Given by unit vector.

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58. What is property of Coulomb force regarding path?

Answer: Path independent
Explanation: Conservative force.

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59. What is interaction between charges at rest called?

Answer: Electrostatic interaction
Explanation: Covered by Coulomb law.

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60. What is importance of Coulomb’s Law?

Answer: Basis of electrostatics
Explanation: Helps understand electric forces.

61. What is force when charges are in vacuum?

Answer: Maximum
Explanation: No medium reduces the force.

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62. What is force when charges are in dielectric medium?

Answer: Less than in vacuum
Explanation: Due to dielectric constant.

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63. What is formula of Coulomb force using permittivity?

Answer:
$F=\frac{1}{4\pi {\epsilon }_0}\frac{q_1{q}_2}{r^2}$
Explanation: Standard form in vacuum.

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64. What is relation between force and dielectric constant?

Answer:
$F=\frac{F_0}{K}$
Explanation: $K$ reduces force.

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65. What is effect of charge sign on magnitude of force?

Answer: No effect
Explanation: Sign affects direction only.

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66. What is the nature of force between two electrons?

Answer: Repulsive
Explanation: Both have negative charge.

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67. What is force between proton and electron?

Answer: Attractive
Explanation: Opposite charges attract.

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68. What is the ratio of electric force to gravitational force?

Answer: Very large
Explanation: Electric force is much stronger.

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69. What is Coulomb’s law validity condition?

Answer: Charges must be stationary
Explanation: Applies to electrostatics.

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70. What is distance requirement for Coulomb’s law?

Answer: Charges should be point-like
Explanation: Size negligible compared to distance.

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71. What is unit of permittivity?

Answer: F/m
Explanation: Farad per meter.

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72. What is value of permittivity of free space?

Answer: $8.85\times {10}^{-12}F\mathrm{/}m$
Explanation: Constant value.

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73. What is effect of medium like water on force?

Answer: Greatly reduced
Explanation: High dielectric constant.

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74. What is force if one charge is zero?

Answer: Zero
Explanation: No interaction.

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75. What is symmetry in Coulomb force?

Answer: Equal and opposite forces
Explanation: Newton’s third law.

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76. What is direction of force on each charge?

Answer: Opposite directions
Explanation: Action–reaction pair.

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77. What is electric force dependence on time?

Answer: Independent
Explanation: Static charges only.

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78. What is Coulomb force field nature?

Answer: Radial
Explanation: Directed along radius.

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79. What is effect of doubling distance?

Answer: Force becomes one-fourth
Explanation: Inverse square law.

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80. What is effect of halving distance?

Answer: Force becomes four times
Explanation: Strong dependence on distance.

81. What is force between identical charges $q$?

Answer:
$F=k\frac{q^2}{r^2}$
Explanation: Same charges give squared term.

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82. What happens if both charges are negative?

Answer: Repulsion
Explanation: Like charges repel.

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83. What happens if both charges are positive?

Answer: Repulsion
Explanation: Same sign charges.

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84. What is force if charges are unequal?

Answer: Depends on product
Explanation: $F\propto q_1{q}_2$

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85. What is force if distance is very large?

Answer: Nearly zero
Explanation: Force decreases rapidly.

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86. What is effect of reducing medium permittivity?

Answer: Force increases
Explanation: $F\propto \frac{1}{\epsilon }$

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87. What is relation between Coulomb force and electric field?

Answer:
$F=qE$
Explanation: Force on charge in field.

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88. What is nature of electric field produced by charge?

Answer: Radial
Explanation: Outward/inward direction.

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89. What is Coulomb force compared to nuclear force?

Answer: Weaker
Explanation: Nuclear force is strongest.

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90. What is Coulomb force compared to gravitational force?

Answer: Much stronger
Explanation: Electric force dominates.

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91. What is force when charges are extremely close?

Answer: Very large
Explanation: Inverse square effect.

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92. What is effect of sign on force direction?

Answer: Determines attraction or repulsion
Explanation: Sign decides direction.

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93. What is force symmetry between two charges?

Answer: Equal and opposite
Explanation: Newton’s third law.

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94. What is SI unit of Coulomb constant?

Answer: $N{m}^2\mathrm{/}{C}^2$
Explanation: Derived unit.

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95. What is mathematical nature of Coulomb’s law?

Answer: Inverse square law
Explanation: Fundamental relation.

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96. What is effect of charge distribution shape?

Answer: Law applies to point charges
Explanation: Needs modification for extended bodies.

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97. What is electrostatic force direction in space?

Answer: Along straight line
Explanation: Central force.

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98. What is magnitude of force always?

Answer: Positive
Explanation: Direction handled separately.

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99. What is Coulomb’s law important for?

Answer: Calculating electric force
Explanation: Basic law of electrostatics.

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100. What is basic assumption of Coulomb’s law?

Answer: Charges are stationary
Explanation: Applies only in electrostatics.

101. What is force between charges if $q_1=q_2=0$?

Answer: Zero
Explanation: No charge → no force.

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102. What happens if only one charge is present?

Answer: No force
Explanation: Interaction needs two charges.

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103. What is dependence of force on sign of charges?

Answer: Determines nature of force
Explanation: Attraction or repulsion.

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104. What is formula using permittivity explicitly?

Answer:
$F=\frac{1}{4\pi \epsilon }\frac{q_1{q}_2}{r^2}$
Explanation: General form in medium.

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105. What is relation between $k$ and permittivity?

Answer:

$$k=\frac{1}{4\pi {\epsilon }_0}$$

Explanation: Defines Coulomb constant.

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106. What is SI unit of electric force?

Answer: Newton
Explanation: Standard unit.

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107. What is effect of charge magnitude on direction?

Answer: No effect
Explanation: Only sign matters.

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108. What is relation between force and distance graph?

Answer: Inverse square curve
Explanation: Non-linear relation.

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109. What is force if distance approaches infinity?

Answer: Zero
Explanation: Charges don’t interact at large distance.

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110. What is Coulomb force classified as?

Answer: Central force
Explanation: Acts along line joining charges.

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111. What is characteristic of central force?

Answer: Acts along radius
Explanation: No torque about center.

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112. What is net force in system of many charges?

Answer: Vector sum
Explanation: Superposition principle.

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113. What is unit of charge in CGS system?

Answer: Statcoulomb
Explanation: Different unit system.

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114. What is Coulomb’s law in CGS system?

Answer:
$F=\frac{q_1{q}_2}{r^2}$
Explanation: No constant in CGS.

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115. What is electric force nature compared to magnetic force?

Answer: Different
Explanation: Magnetic force needs motion.

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116. What is Coulomb force independent of?

Answer: Time
Explanation: Static charges only.

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117. What is force between charges placed in air?

Answer: Nearly same as vacuum
Explanation: Air permittivity ≈ vacuum.

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118. What is effect of surrounding medium like glass?

Answer: Force decreases
Explanation: Higher dielectric constant.

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119. What is force between charges at rest?

Answer: Electrostatic force
Explanation: Described by Coulomb’s law.

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120. What is force between moving charges?

Answer: Not purely Coulomb
Explanation: Magnetic effects arise.

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121. What is electric force nature in field theory?

Answer: Field-mediated
Explanation: Through electric field.

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122. What is relation between field and force?

Answer:
$F=qE$
Explanation: Field produces force.

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123. What is superposition for electric field?

Answer: Vector addition
Explanation: Same as force.

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124. What is potential relation with force?

Answer: Force = gradient of potential
Explanation: Linked concepts.

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125. What is importance in atomic structure?

Answer: Holds electrons and nucleus
Explanation: Coulomb attraction.

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126. What is force between electron and nucleus?

Answer: Attractive
Explanation: Opposite charges.

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127. What is role in bonding?

Answer: Electrostatic attraction
Explanation: Between ions.

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128. What is force behavior in 3D space?

Answer: Radial
Explanation: Symmetric in all directions.

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129. What is mathematical nature of force vector?

Answer: Directed quantity
Explanation: Has magnitude and direction.

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130. What is force magnitude always?

Answer: Positive
Explanation: Direction handled separately.

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131. What is force at very small separation physically?

Answer: Limited
Explanation: Other forces dominate.

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132. What is Coulomb force at atomic scale?

Answer: Very strong
Explanation: Dominates atomic forces.

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133. What is effect of sign reversal of both charges?

Answer: No change in force
Explanation: Product remains same.

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134. What is effect of reversing one charge?

Answer: Direction changes
Explanation: Attraction ↔ repulsion.

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135. What is field produced by charge responsible for?

Answer: Force on other charges
Explanation: Field concept.

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136. What is relation between field lines and force?

Answer: Tangent gives direction
Explanation: Shows force direction.

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137. What is symmetry in force distribution?

Answer: Uniform in all directions
Explanation: For isolated charge.

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138. What is condition for equilibrium of charges?

Answer: Net force zero
Explanation: Balanced forces.

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139. What is Coulomb force compared to weak force?

Answer: Stronger
Explanation: Weak force acts at nuclear level.

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140. What is Coulomb force compared to strong force?

Answer: Weaker
Explanation: Strong force is strongest.

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141. What is force law similar to Coulomb’s law?

Answer: Newton’s gravitational law
Explanation: Both inverse square.

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142. What is key difference from gravity?

Answer: Can be attractive or repulsive
Explanation: Gravity only attractive.

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143. What is medium effect absent in?

Answer: Vacuum
Explanation: No reduction.

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144. What is Coulomb force nature mathematically?

Answer: Inverse square
Explanation: Fundamental interaction.

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145. What is charge interaction type?

Answer: Pairwise
Explanation: Between two charges.

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146. What is significance in electronics?

Answer: Basis of circuits
Explanation: Charge behavior.

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147. What is force when charges are extremely large?

Answer: Very high
Explanation: Direct proportionality.

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148. What is Coulomb law applicable in?

Answer: Electrostatics
Explanation: Charges at rest.

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149. What is limitation regarding size of charges?

Answer: Must be point-like
Explanation: Size negligible.

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150. What is conclusion of Coulomb’s Law?

Answer: Describes electric force
Explanation: Fundamental electrostatic law.

151. What is Coulomb force between charges of opposite sign?

Answer: Attractive
Explanation: Unlike charges attract.

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152. What is Coulomb force between charges of same sign?

Answer: Repulsive
Explanation: Like charges repel.

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153. What is the direction of force on $q_1$?

Answer: Along line joining charges
Explanation: Central force.

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154. What is the nature of force between charges at rest?

Answer: Electrostatic
Explanation: No motion involved.

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155. What is the force when distance is very small?

Answer: Very large
Explanation: Inverse square law.

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156. What happens when distance increases greatly?

Answer: Force approaches zero
Explanation: Weak interaction.

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157. What is the effect of doubling distance?

Answer: Force becomes one-fourth
Explanation: $F\propto \frac{1}{r^2}$

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158. What is the effect of tripling distance?

Answer: Force becomes one-ninth
Explanation: Inverse square law.

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159. What is the force if both charges are equal?

Answer: Symmetrical force
Explanation: Equal magnitude on both.

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160. What is interaction force pair nature?

Answer: Equal and opposite
Explanation: Newton’s third law.

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161. What is direction of force on each charge?

Answer: Opposite directions
Explanation: Action-reaction pair.

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162. What is magnitude of force on both charges?

Answer: Same
Explanation: Equal forces.

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163. What is the force if medium has high dielectric constant?

Answer: Reduced
Explanation: $F\propto \frac{1}{K}$

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164. What is the force if medium is vacuum?

Answer: Maximum
Explanation: No reduction factor.

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165. What is effect of increasing charge?

Answer: Force increases
Explanation: Direct relation.

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166. What is effect of decreasing charge?

Answer: Force decreases
Explanation: Proportional relation.

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167. What is the shape of force-distance graph?

Answer: Hyperbolic curve
Explanation: Inverse square nature.

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168. What is force nature for large charge values?

Answer: Very strong
Explanation: Direct proportionality.

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169. What is force when one charge is negative?

Answer: Depends on other charge
Explanation: Determines attraction/repulsion.

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170. What is force if charges are equal and opposite?

Answer: Attractive
Explanation: Opposite charges.

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171. What is Coulomb force independent of?

Answer: Time
Explanation: Static charges only.

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172. What is Coulomb force dependent on?

Answer: Charge and distance
Explanation: Main factors.

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173. What is the field responsible for Coulomb force?

Answer: Electric field
Explanation: Mediates interaction.

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174. What is interaction range of Coulomb force?

Answer: Infinite
Explanation: Long-range force.

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175. What is the force if charges are placed in oil?

Answer: Less than in air
Explanation: Higher dielectric constant.

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176. What is force in air compared to vacuum?

Answer: Nearly same
Explanation: Air permittivity ≈ vacuum.

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177. What is Coulomb force nature in vector form?

Answer: Vector quantity
Explanation: Has magnitude and direction.

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178. What is scalar part of Coulomb force?

Answer: Magnitude
Explanation: Value without direction.

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179. What is vector part of Coulomb force?

Answer: Direction
Explanation: Given by unit vector.

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180. What is force symmetry property?

Answer: Equal magnitude
Explanation: For both charges.

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181. What is interaction between charges called?

Answer: Electrostatic interaction
Explanation: Governed by Coulomb’s law.

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182. What is force law similarity?

Answer: Similar to gravity
Explanation: Both inverse square.

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183. What is difference from gravity?

Answer: Can repel or attract
Explanation: Gravity only attracts.

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184. What is field direction for positive charge?

Answer: Outward
Explanation: Radial direction.

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185. What is field direction for negative charge?

Answer: Inward
Explanation: Towards charge.

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186. What is force experienced by test charge?

Answer: Due to electric field
Explanation: $F=qE$

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187. What is requirement for Coulomb law validity?

Answer: Charges must be stationary
Explanation: Electrostatic condition.

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188. What is condition regarding size of charges?

Answer: Must be point charges
Explanation: Size negligible.

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189. What is force if charges are very far?

Answer: Negligible
Explanation: Weak interaction.

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190. What is behavior of force in different media?

Answer: Varies
Explanation: Depends on permittivity.

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191. What is Coulomb force nature in free space?

Answer: Maximum
Explanation: No dielectric effect.

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192. What is interaction strength compared to magnetic force?

Answer: Generally stronger
Explanation: At rest condition.

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193. What is effect of reversing both charges?

Answer: No change
Explanation: Product remains same.

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194. What is effect of reversing one charge?

Answer: Force direction changes
Explanation: Attraction ↔ repulsion.

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195. What is role in atomic structure?

Answer: Binds electrons to nucleus
Explanation: Electrostatic attraction.

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196. What is role in ionic bonding?

Answer: Attraction between ions
Explanation: Opposite charges.

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197. What is force dependence on orientation?

Answer: Along straight line
Explanation: Central force.

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198. What is Coulomb force law type?

Answer: Fundamental law
Explanation: Basic electrostatics.

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199. What is nature of force field lines?

Answer: Radial
Explanation: From/to charge.

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200. What is summary of Coulomb’s Law?

Answer: Force between charges depends on magnitude and distance
Explanation: Core electrostatic principle.

201. What is force between two unit charges at unit distance?

Answer: $9\times {10}^{9}N$
Explanation: From Coulomb constant value.

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202. What is effect of reducing distance to half?

Answer: Force becomes 4 times
Explanation: Inverse square law.

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203. What is effect of increasing distance 4 times?

Answer: Force becomes $\frac{1}{16}$
Explanation: $F\propto \frac{1}{r^2}$

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204. What is the direction of electric force?

Answer: Along line joining charges
Explanation: Central force.

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205. What happens if charges are very small?

Answer: Force is small
Explanation: Direct proportionality.

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206. What happens if charges are very large?

Answer: Force is large
Explanation: Strong interaction.

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207. What is force between equal charges at same distance?

Answer: Same magnitude
Explanation: Symmetry.

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208. What is nature of force in electrostatics?

Answer: Non-contact
Explanation: Acts without touching.

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209. What is effect of dielectric medium?

Answer: Reduces force
Explanation: Due to permittivity.

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210. What is force direction for positive and negative charge?

Answer: Towards each other
Explanation: Attraction.

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211. What is force direction for same charges?

Answer: Away from each other
Explanation: Repulsion.

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212. What is mathematical relation of force with charge?

Answer: Directly proportional
Explanation: $F\propto q$

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213. What is mathematical relation of force with distance?

Answer: Inverse square
Explanation: $F\propto \frac{1}{r^2}$

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214. What is behavior of force in vacuum?

Answer: Maximum
Explanation: No medium effect.

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215. What is behavior of force in water?

Answer: Much reduced
Explanation: High dielectric constant.

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216. What is force between charges in air?

Answer: Nearly same as vacuum
Explanation: Air permittivity ≈ vacuum.

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217. What is basic principle of Coulomb’s Law?

Answer: Interaction between charges
Explanation: Fundamental concept.

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218. What is force when one charge is doubled?

Answer: Force doubles
Explanation: Direct relation.

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219. What is force when both charges are doubled?

Answer: Force becomes 4 times
Explanation: Product increases.

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220. What is force when both charges are halved?

Answer: Force becomes one-fourth
Explanation: $F\propto q_1{q}_2$

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221. What is effect of medium with low permittivity?

Answer: Force increases
Explanation: $F\propto \frac{1}{\epsilon }$

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222. What is force between charges at rest called?

Answer: Electrostatic force
Explanation: Static interaction.

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223. What is force between moving charges?

Answer: Not purely Coulomb
Explanation: Magnetic effects involved.

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224. What is direction of force on test charge?

Answer: Same as electric field
Explanation: For positive charge.

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225. What is force magnitude always?

Answer: Positive
Explanation: Direction handled separately.

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226. What is relation between field and force?

Answer:
$F=qE$
Explanation: Fundamental relation.

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227. What is force behavior for very large separation?

Answer: Negligible
Explanation: Weak interaction.

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228. What is role of Coulomb’s Law in physics?

Answer: Fundamental law
Explanation: Basis of electrostatics.

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229. What is effect of reversing both charges?

Answer: No change
Explanation: Product remains same.

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230. What is effect of reversing one charge?

Answer: Direction changes
Explanation: Attraction ↔ repulsion.

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231. What is Coulomb force range?

Answer: Infinite
Explanation: Long-range force.

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232. What is nature of force graph?

Answer: Non-linear
Explanation: Inverse square relation.

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233. What is force at atomic level?

Answer: Very strong
Explanation: Dominates interactions.

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234. What is force compared to gravity?

Answer: Much stronger
Explanation: Electric force dominates.

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235. What is force compared to nuclear force?

Answer: Weaker
Explanation: Nuclear force strongest.

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236. What is symmetry in Coulomb force?

Answer: Equal and opposite
Explanation: Newton’s third law.

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237. What is field produced by charge?

Answer: Electric field
Explanation: Causes force.

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238. What is relation of Coulomb force to field lines?

Answer: Along field lines
Explanation: Direction given by field.

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239. What is force if charge is zero?

Answer: Zero
Explanation: No interaction.

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240. What is effect of medium on electric field?

Answer: Reduces field
Explanation: Due to polarization.

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241. What is nature of Coulomb force in 3D?

Answer: Radial
Explanation: Symmetric.

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242. What is relation between Coulomb law and Gauss law?

Answer: Both describe electric field
Explanation: Fundamental laws.

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243. What is force if charges are identical and distance same?

Answer: Same value
Explanation: Symmetry.

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244. What is requirement for accurate application?

Answer: Point charges
Explanation: Size negligible.

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245. What is effect of changing medium repeatedly?

Answer: Force changes
Explanation: Depends on permittivity.

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246. What is role in electrostatics problems?

Answer: Calculation of force
Explanation: Core formula.

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247. What is nature of Coulomb force in equilibrium?

Answer: Balanced
Explanation: Net force zero.

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248. What is force direction if both charges negative?

Answer: Away
Explanation: Repulsion.

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249. What is force direction if both charges positive?

Answer: Away
Explanation: Repulsion.

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250. What is overall summary of Coulomb’s Law?

Answer: Force depends on charge and distance
Explanation: Fundamental electrostatic relation.

251. What is force between two charges separated by infinite distance?

Answer: Zero
Explanation: No interaction at infinite separation.

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252. What is nature of Coulomb force for static charges?

Answer: Electrostatic
Explanation: Charges are at rest.

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253. What is interaction between multiple charges called?

Answer: Superposition
Explanation: Sum of all forces.

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254. What is net force in system of charges?

Answer: Vector sum
Explanation: Add all forces.

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255. What is Coulomb force dependence on medium?

Answer: Depends on permittivity
Explanation: Different materials affect force.

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256. What is Coulomb force direction always?

Answer: Along line joining charges
Explanation: Straight line force.

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257. What is effect of equal charges placed closer?

Answer: Force increases
Explanation: Distance decreases.

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258. What is effect of opposite charges placed closer?

Answer: Attraction increases
Explanation: Stronger force.

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259. What is Coulomb force nature in vacuum?

Answer: Maximum
Explanation: No dielectric reduction.

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260. What is Coulomb force nature in glass?

Answer: Reduced
Explanation: High dielectric constant.

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261. What is unit of Coulomb constant?

Answer: Nm²/C²
Explanation: SI derived unit.

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262. What is formula for Coulomb force in vacuum?

Answer:

$F=k\frac{q_1{q}_2}{r^2}$

$q_1$

$q_2$

$r$

$F=k\frac{q_1{q}_2}{r^2}\approx -5.06$

Charge and distance sliders update Coulomb force magnitude and direction.

Explanation: Basic formula.

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263. What is relation between force and charge sign?

Answer: Determines direction
Explanation: Attraction or repulsion.

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264. What is Coulomb force nature as a vector?

Answer: Has direction and magnitude
Explanation: Vector quantity.

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265. What is Coulomb force nature as scalar?

Answer: Magnitude only
Explanation: Without direction.

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266. What is force when both charges are very small?

Answer: Very small
Explanation: Weak interaction.

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267. What is force when both charges are very large?

Answer: Very large
Explanation: Strong interaction.

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268. What is Coulomb force independent of?

Answer: Time
Explanation: Static charges.

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269. What is Coulomb force dependent on?

Answer: Distance and charge
Explanation: Main variables.

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270. What is Coulomb force symmetry?

Answer: Equal and opposite
Explanation: Newton’s third law.

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271. What is electric field relation with Coulomb force?

Answer:
$F=qE$
Explanation: Force due to field.

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272. What is direction of electric field for positive charge?

Answer: Outward
Explanation: Away from charge.

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273. What is direction of electric field for negative charge?

Answer: Inward
Explanation: Towards charge.

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274. What is Coulomb force at atomic scale?

Answer: Very strong
Explanation: Dominates atomic forces.

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275. What is Coulomb force range?

Answer: Infinite
Explanation: Long-range force.

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276. What is Coulomb force graph nature?

Answer: Inverse square curve
Explanation: Non-linear relation.

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277. What is Coulomb force behavior in conductor?

Answer: Charges move to surface
Explanation: Equilibrium condition.

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278. What is Coulomb force effect in capacitor?

Answer: Stores energy
Explanation: Charge interaction.

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279. What is Coulomb force effect in atoms?

Answer: Holds electrons
Explanation: Attraction to nucleus.

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280. What is Coulomb force effect in molecules?

Answer: Chemical bonding
Explanation: Electrostatic interaction.

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281. What is Coulomb force compared to gravitational force?

Answer: Much stronger
Explanation: Electric force dominates.

---

282. What is Coulomb force compared to nuclear force?

Answer: Weaker
Explanation: Nuclear force strongest.

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283. What is Coulomb force type?

Answer: Fundamental force
Explanation: Basic interaction.

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284. What is Coulomb force between neutral bodies?

Answer: Zero
Explanation: No net charge.

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285. What is Coulomb force behavior at equilibrium?

Answer: Net force zero
Explanation: Balanced system.

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286. What is Coulomb force behavior for identical charges?

Answer: Repulsive
Explanation: Same sign.

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287. What is Coulomb force behavior for opposite charges?

Answer: Attractive
Explanation: Opposite sign.

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288. What is Coulomb force dependence on medium type?

Answer: Varies
Explanation: Depends on permittivity.

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289. What is Coulomb force effect in electric field lines?

Answer: Shows direction
Explanation: Tangent gives force direction.

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290. What is Coulomb force nature in 3D space?

Answer: Radial
Explanation: Symmetrical.

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291. What is Coulomb force role in electrostatics?

Answer: Basic law
Explanation: Foundation of chapter.

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292. What is Coulomb force relation to Gauss law?

Answer: Both describe field
Explanation: Linked concepts.

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293. What is Coulomb force effect of increasing distance?

Answer: Decreases rapidly
Explanation: Inverse square.

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294. What is Coulomb force effect of decreasing distance?

Answer: Increases rapidly
Explanation: Strong dependence.

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295. What is Coulomb force effect of increasing charge?

Answer: Increases
Explanation: Direct relation.

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296. What is Coulomb force effect of decreasing charge?

Answer: Decreases
Explanation: Proportional relation.

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297. What is Coulomb force direction for like charges?

Answer: Away
Explanation: Repulsion.

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298. What is Coulomb force direction for unlike charges?

Answer: Towards
Explanation: Attraction.

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299. What is Coulomb force importance in electronics?

Answer: Basis of circuits
Explanation: Charge interaction.

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300. What is final conclusion of Coulomb’s Law?

Answer: Force depends on charge and distance
Explanation: Fundamental electrostatic law.

1. Electrostatics 👈🕮 👉👊Electrostatics - Important Formulas Table👌 1 MARKS QUESTION 1. Electric Charge & Properties 2. Coulomb’s Law