Question

An electric charge, + Q is placed on the surface of a solid, conduction sphere of radius a. The distance measured from the centre of the sphere is denoted as r. Then

• A. the charge gets distributed uniformly through the volume of the sphere
• B. The electrostatic potential has the same value for r < a
• C. an equal and opposite charge gets induce in the bottom half of the sphere
• D. the electric field is given by $1/ (4 \pi \in_0 \, r^2)$ for $r < a$

Answer 1

Answer: (B)

Charge (+ Q) gets distributed uniformly over the surface of the sphere. We know that electrostatic potential inside a solid, conducting sphere is constant.