Magnitude of the electric field at center of the square

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Four charges are placed at the corners of a square with sides of1.0m each. The charges at the corner of the square are 125C, 225C,425C, and 375C. What is the magnitude of the electric field at the center of the square? I don't need an answer, but itwould be very helpful if you could teach me how to approach thisproblem or give me a few hints.

Reference no: EM13558783

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