Q. The electric potential at centre of metallic conducting sphere is
A) Zero
B) Half from potential at surface of sphere
C) Equal from potential at surface of sphere
D) Twice from potential at surface of sphere
Explanation
(c) Inside a charged sphere, electric field intensity at all points is zero and electric potential is same at all the points.
Electrical potential,
$V = \frac{1}{4\pi\varepsilon_{0}}\frac{q}{R}$
Therefore, potential at the centre is equal to the potential at the surface.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.