Two concentric, thin metallic spherical shells of radii R1andR2(R1>R2) bear charges Q1 andQ2 respectively. Then the potential at radius ‘r’ between R1 and R2will be 14πϵ0 times
The radii of two concentric circles spherical conducting shells are r1 and r2 (r1<r2) .The change on the outer shell is q. The charge on the inner shell which is connected to the earth is