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What is the amount of work done in movin...

What is the amount of work done in moving a point charge Q around a circular arc of radius 'r' at the centre of which another point charge 'q' is located?

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The work done is moving a charge along any circular path is zero. So, to move a point charge Q around a circular arc of radius 'r' at the centre of which another point charge 'q' is located, no work has to be done.
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