At distances of and from the surface of a uniformly charged solid sphere

PHYSICS · Multi correct · CBSE · Physics · Electrostatic Potential and Capacitance · Electrostatic Potential and Capacitance

Problem

At distances of

5\ \text{cm}

and

10\ \text{cm}

from the surface of a uniformly charged solid sphere, the potentials are

100\ \text{V}

and

75\ \text{V}

, respectively. Then, (a) potential at its surface is

150\ \text{V}

(b) the charge on the sphere is

\frac{50}{3}\times10^{-10}\ \text{C}

1500\ \text{V/m}

(d) the electric potential at its centre is

25\ \text{V}