Compare this problem with Problem 20 in Chapter 23. Two point charges each of magnitude 2.00 +C are located on the x axis. One is at x = 1.00 m, and the other is at x = -1.00 m.
(a) Determine the electric potential on the y axis at y = 0.500 m.
(b) Calculate the change in electric potential energy of the system as a third charge of -3.00 +C is brought from infinitely far away to a position on the y axis at y = 0.500 m.