Question

Ten electrons are equally spaced and fixed around a circle of radius R. Relative to V = 0 at infinity, the electrostatic potential V and the electric field E at the centre C are

• A. $V \neq 0$ and $\overrightarrow{E} \neq 0$
• B. $V \neq 0$ and $\overrightarrow{E} = 0$
• C. $V = 0$ and $\overrightarrow{E} = 0$
• D. $V = 0$ and $\overrightarrow{E} \neq 0$

Answer 1

Answer: (B)

$V \neq 0$ and $\overrightarrow{E} = 0$

Answer 2

Sol. At centre E = 0, V ≠ 0