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. (Delhi 2008)
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Answer:
Explanation:
Since, Points A and B are equidistant from the centre of the square where charge q=500μC is located.
Therefore, points A and B are at the same potential i.e., VA=VB
Step 2: Work done
∴ Work done by external agent in moving charge qO =10μC from A to B will be
W=qΔV =q0 (VB −VA )=0
Hence, Work done in moving charge from A to B will be zero.
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