Estimate the absolute potential at the squares center

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Question: The absolute potential at the center of a square is 3. V when a charge of +Q is located at one of the square's corners.

Part A: What is the absolute potential at the square's center when a second charge of -Q is placed at one of the remaining corners?

Please help for the above question, completely confused!! Show each steps if possible, Thanks.

Reference no: EM13700623

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