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Question: Answered & Verified by Expert
A point charge $\mathrm{q}$ is rotated along a circle in the electric field generated by another point charge Q. The work done by the electric field on the rotating charge in one complete revolution is
PhysicsElectrostaticsVITEEEVITEEE 2019
Options:
  • A zero
  • B positive
  • C negative
  • D zero if the charge $Q$ is at the centre and nonzero otherwise.
Solution:
2492 Upvotes Verified Answer
The correct answer is: zero
Work done in displacement of charge, $\mathrm{W}=\mathrm{q} \Delta \mathrm{V}$
where $\Delta \mathrm{V}=$ potential difference between the displacement of charge Hence, work done in complete rotation is zero.

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