In Figure 22-25, two identical circular non-conducting rings are centered on the same line. For three situations, the uniform charges on rings A and B are, respectively, 1 +q0 and +q0 2 - q0 and -q0 3 - q0 and +q0
(a) Rank the situations according to the magnitude of the net electric field at point P1 midway between the rings, greatest first (use only the symbols > or =,for example, 2=3>1).
(b) Rank the situations according to the magnitude of the net electric field at point P2 at the center of ring B, greatest first (use only the symbols > or =, for example, 2=3>1).
(c) Rank the situations according to the magnitude of the net electric field at point P3 to the right of ring B, greatest first (use only the symbols > or =, for example, 2=3>1).
I understood (a) and (c) without any problems. I only need help with (b). I found on another question that the answer is 1=2=3....but I don’t really understand why. I am hoping someone can help me to understand
