It is given that the electric potential is zero at the center of the square in Figure 20-2...

It is given that the electric potential is zero at the center of the square in Figure 20-22. (a) If q1 = +Q, what is the value of the charge q2? (b) Is the electric potential at point A positive, negative, or zero? Explain. (c) Is the electric potential at point B positive, negative, or zero? Explain.

FIGURE 20-22 Problem