Figure shows two concentric rings, of radii R and R' = 4.00 R, that lie on the same plane. Point P lies on the central z axis, at distance D = 2.00 R 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 electriv field at P is zero ?

Explanation

`-8.00 Q`