Q. The electric field created by a point charge falls with distance $r$ from the point charge as
A) $\frac{1}{r}$
B) $\frac{1}{r^{2}}$
C) $\frac{1}{r^{3}}$
D) $\frac{1}{r^{4}}$
Explanation
(b) Electric field at a point P due to a point charge q
$E = \frac{kq}{r^{2}} = \frac{1}{4\pi\varepsilon_{0}}\frac{q}{r^{2}}$
$E \propto \frac{1}{r^{2}}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.