Question: Three identical point charges q are placed at each of three corners of a square of side L. Find the magnitude and direction of the

Three identical point charges q are placed at each of three corners of a square of side L. Find the magnitude and direction of the net force on a point charge - 3q placed
(a) At the center of the square and
(b) At the vacant corner of the square. In each case, draw a free. Body diagram showing the forces exerted on the - 3q charge by each of the other three charges.

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