Figure 22-48 shows two concentric rings, of radii Rand R'
Chapter 22, Problem 30(choose chapter or problem)
Figure 22-48 shows two concentric rings, of radii Rand R' = 3.00R, that lie on the same plane. Point P lies on the central z axis, at distance D = 2.00R from the center of the rings. The smaller ring has uniformly distributed charge + Q. In terms of Q, what is the uniformly distributed charge on the larger ring if the net electric field at Pis zero?
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