The charge q1 in Figure 20-22 has the value +Q. (a) What value must q2 have if the electri...

The charge q1 in Figure 20-22 has the value +Q. (a) What value must q2 have if the electric potential at point B is to be zero? (b) With the value for q2 found in part (a), is the electric potential at point A positive, negative, or zero? Explain.

FIGURE 20-22 Problem