Q. A hollow conducting sphere of radius $R$ has a charge $( + Q)$ on its surface. What is the electric potential within the sphere at a distance $r = R/3$ from its centre
A) Zero
B) $\frac{1}{4\pi\varepsilon_{0}}\frac{Q}{r}$
C) $\frac{1}{4\pi\varepsilon_{0}}\frac{Q}{R}$
D) $\frac{1}{4\pi\varepsilon_{0}}\frac{Q}{r^{2}}$
Explanation
(c) Inside a conducting body, potential is same everywhere and equals to the potential of it’s surface
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.