Q176 / 180 · KCET 2018 · Physics
The work done to move a charge on an equivalent surface is
- AInfinity
- BLess than \( 1 \)
- CGreater than \( 1 \)
- Correct answerDZero
Solution
An equipotential surface has same electric potential at all points. Therefore, work done in moving a charge on an
equipotential surface is
\[ \begin{array}{l} W=q\left(V_{B}-V_{A}\right) \\ \text { But } V_{A}=V_{B} \\ \Rightarrow W=0 \end{array} \]
Therefore, work done in moving a charge on an equipotential surface is zero.
equipotential surface is
\[ \begin{array}{l} W=q\left(V_{B}-V_{A}\right) \\ \text { But } V_{A}=V_{B} \\ \Rightarrow W=0 \end{array} \]
Therefore, work done in moving a charge on an equipotential surface is zero.
Hence, the correct answer is option: 'D'.