Question

In the following diagram, the workdone in moving a point charge from point $\text{P}$ to the points $\text{A, B}$ and $\text{C}$ respectively will be ( $\text{A, B}$ and $\text{C}$ are in semi circle)

• A. $W_A<W_B<W_C$
• B. $W_A>W_B>W_C$
• C. $W_A=W_B=W_C$
• D. $W_A=W_B=W_C=0$

Answer 1

The correct option is C $W_A=W_B=W_C$

The points $\text{A, B}$ and $\text{C}$ are at equipotential surface of the charge $q$. Hence the workdone in carrying a point charge from $\text{P}$ to the points $\text{A, B}$ and $\text{C}$ will be same.

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Hence, (c) is the correct answer.