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  • 12-04-2024
  • Physics
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Charges +q,+2q,−5q and +2q are placed at the four corners ABCD of a square of side a, taken in cyclic order from the bottom left corner.
(a) Find the electric field E and the potential V at the centre of the square.
(b) Verify E=−∇V at the center of the square.

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