Question

A point charge $q_0$ is placed at a distance $r$ from a point dipole. Force on point charge due to dipole is proportional to

• A. $\frac{1}{r^2}$
• B. $\frac{1}{r}$
• C. $\frac{1}{r^4}$
• D. $\frac{1}{r^3}$

Answer 1

The correct option is D $\frac{1}{r^3}$

$F=q_0.E=\frac{k{q}_{0}p}{r^3}$
$F\propto \frac{1}{r^3}$