Question

28 Four point charges have the same magnitude of 2.4 x 10-12C and are fixed to the corners of a…

28 Four point charges have the same magnitude of 2.4 x10-12C and are fixed to the corners of a square that is 4.0 cm on aside. Three of the charges are positive and one is negative.Determine themagnitude of the net electric field that exists atthe center of the square.

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