Question

The electrostatic potential on the surface of a charged conducting sphere is $100V$. Two statements are made in this regard
$S_1$ : At any point inside the sphere, electric intensity is zero
$S_2$ : At any point inside the sphere, the electrostatic potential is $100V$
Which of the following is a correct statement?

• A. $S_1$ is true but $S_2$ is false
• B. Both $S_1$ and $S_2$ are false
• C. $S_1$ is true, $S_2$ is also true and $S_1$ is the cause of $S_2$
• D. $S_1$ is true, $S_2$ is also true but the statements are independent

Answer 1

Answer: (C)

Potential at any point inside a charged conducting sphere = potential on the surface, $V=\frac{Kq}{R}=100V$
Now, $E=-\frac{dV}{dr}=0$ $(\because$ $V$ is constant)