Four point charges are located at the corners of a square with sides of length a

Question

Four point charges are located at the corners of a square with sides of length a . Two of the charges are +q , and two are -q.

Find the magnitude of the net electric force exerted on a charge +Q, located at the center of the square, for the following arrangement of charge: the two positive charges are on the top corners, and the two negative charges are on the bottom corners.

Express your answer in terms of the variables q, Q, a, and appropriate constants.


I entered my answer as 2kqQ/a^2, but it keeps saying that my answer contains an incorrect numerical multiplier or is missing one.

can you please write down the exact answer to this question?
Thank you!!!!

Explanation / Answer

2sqt(2) kQ/a^2

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