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Electric Potential and Potential Difference

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Question

When the particle of charge 10MC is brought from infinite to a point in electric field 10mJ work is done by external forces. What is the potential at that time.....??

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Solution

Charge Q = 10 x 10^-6 C
Work done W = 10 x 10^-3 J
Potential at P = V = W/Q = 10 x 10^-3 J/(10 x 10^-6 C)
=10³ V = 1000 V.

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