MHT CET 2022 Physics question
Four electric charged +q, +q, -q, and -q are placed in order at the corners of a square of side '2r'. The electric potential at appoint midway between the two negative charges is
Answer: (C)
Solution
Place the charges in order at the corners 1, 2, 3, 4 of the square of side . The two negative charges are at the adjacent corners 3 and 4, so the required point is the midpoint of side 3-4. Its distance from each negative charge is . Its distance from each positive charge (corners 1 and 2)
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