Q. A hollow metallic sphere of radius R is given a charge$\mathcal{\ Q}$. Then, the potential at the centre is
A) Zero
B) $\frac{1}{4\pi\varepsilon_{0}}.\frac{\mathcal{Q}}{R}$
C) $\frac{1}{4\pi\varepsilon_{0}}.\frac{2\mathcal{Q}}{R}$
D) $\frac{1}{4\pi\varepsilon_{0}}.\frac{\mathcal{Q}}{2R}$
Explanation
(b) Potential at the centre of hollow metallic sphere
$V = \frac{1}{4\pi\varepsilon_{0}}\frac{\mathcal{Q}}{R}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.