A point charge is placed at any point on the axis of an electric dipole at some large distance, experiences a force F. The force acting on the point charge when it's distance from the dipole is halved will be
This question was previously asked in
Shift 27/05/2023 3:30 PM - 6:30 PM
A
4F
B
8F
C
F/8
D
F/4
Correct Answer
8F
Detailed Explanation
As electric field on axial line varies
E ∝ r^-3
F/q ∝ r-3
F ∝ r^-3
Hence, F'/F = (r/r')^3
F'=(2)^3 F
F'= 8F
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