Chapter 22, Problem 6Q

In Fig. 22-27, two identical circular nonconducting rings are centered on the same line with their planes perpendicular to the line. Each ring has charge that is uniformly distributed along its circumference. The rings each produce electric fields at points along the line. For three situations, the charges on rings A and B are, respectively, (1) q₀ and q₀, (2) −q₀ and −q₀, and (3) −q₀ and q₀. Rank the situations according to the magnitude of the net electric field at (a) point P₁ midway between the rings, (b) point P₂ at the center of ring B, and (c) point P₃ to the right of ring B, greatest first.

Figure 22-27 Question 6.