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Questions  

A given charge is 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

a
2F
b
F / 2
c
F / 4
d
F / 8

detailed solution

Correct option is D

Force on charge F=qEa=q×k.2pr3⇒F∝1r3When r → doubled; F→18 times

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