Question

A work of $200J$ is done in moving a charge of $-5C$ from infinity to a particular point in an electrostatic field. The potential of this point is.......... .

• A. $-20V$
• B. $-25V$
• C. $-30V$
• D. $-40V$

Answer 1

Answer: (D)

$-40V$

$\begin{array}{c}w=qv\\ \Rightarrow 200=\left(-5\right)v\\ \Rightarrow v=-40\end{array}$

Hence,

option $\left(D\right)$ is correct answer.