3. A charge, +Q (Q is a magnitude in Coulombs) is fixed to the top left corner of a square of side length a as shown. A

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3 A Charge Q Q Is A Magnitude In Coulombs Is Fixed To The Top Left Corner Of A Square Of Side Length A As Shown A 1 (203.16 KiB) Viewed 70 times

3. A charge, +Q (Q is a magnitude in Coulombs) is fixed to the top left corner of a square of side length a as shown. A second charge, qx, is fixed to the bottom left corner of the square. The potential at position B (bottom right corner) is measured to be 0 V. It can be assumed that no other charges are present. a) What is the value of qx? (Express your answer in terms of Q and a.) +0 1 I 1 I qx ol b) What is the value of the potential at position A in the top right corner (refer to the answer for (a))? I B