Homework Problem 5.7 Four -2.0 uC point charges are placed on the corners of a square with 6.0 m sides. Find the potential difference between a point at infinity the

center of the square, AVxo. Be careful, if the charges are in a square, the coordinates of the upper right charge is (3m, 3m, 0). (а) 0 (b) -3.1 х 10^2 V (с) -4.2 х 10^4 V (d) -2.5 х 10^6 V (е) -1.7 х 10^4 V