Exams › JEE Advanced › Physics
The work done in moving a positive charge along an equipotential surface is:
- Finite, positive but not zero
- Finite, negative but not zero
- Zero
- Infinite
Correct answer: Zero
Solution
All points on an equipotential surface have the same potential, so the potential difference between any two points on it is zero. Work done = q * (V_final - V_initial) = q * 0 = 0.
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