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.
