What are the magnitude of electric field at center of square

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In the Figure, four charges form the corners of a square and four more charges lie at the midpoints of the sides of the square. The distance between adjacent charges on the perimeter of the square is d. What are the magnitude (in terms of q/d2) and direction of the electric field at the center of the square?

1345_Four charges form the corners.gif

Reference no: EM13983087

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