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Electrostatic Potential and Capacitance
Question
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A 500 μC charge is at the centre of a square of side 10 cm. Find the work done in moving a charge of 10 μC between two diagonally opposite points on the square.

Answer


Work done is given by q(v2-V1). 
The two diagonally opposite points on a square has the same potential. Since, there is no difference in potential, work done is 0.

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