Electrostatics Question 721

Question: A 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

Options:

A) F/4

B) F/8

C) 2F

D) F/2

Show Answer

Answer:

Correct Answer: B

Solution:

[b] $ E=\frac{1}{4\pi {\varepsilon _{0}}}\frac{2p}{r^{3}};E\propto \frac{1}{r^{3}}\Rightarrow F\propto \frac{1}{r^{3}} $ Hence, the force will become F/8.



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