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Question

A given charge situated at a certain distance from an electric dipole in the end on position, experiences a force F. If the distance of the charge is doubled, the force acting on the charge will be :
  1. F/8
  2. F/4
  3. 2F
  4. F/2

A
F/8
B
2F
C
F/2
D
F/4
Solution
Verified by Toppr

The electric field at a distance r from the dipole is E=K2Pr3
, so E1r3
Force on charge q is F=qE also F1r3

If distance r is doubled, then force will F=F8

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