The two charges in the figure below are separated by a distance d = 1.50 cm, and Q = +7.20 nC. A square of side length d has positive charge Q at its bottom left corner and positive charge 2Q at its bottom right corner. Point A is at the top left corner and point B is at the top right corner. (a) Find the electric potential at A.   Your response differs from the correct answer by more than 100%. kV (b) Find the electric potential at B.  kV (c) Find the electric potential difference between B and A.

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