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
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a
2F
b
F / 2
c
F / 4
d
F / 8
answer is D.
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Detailed Solution
Force on charge F=qEa=q×k.2pr3⇒F∝1r3When r → doubled; F→18 times