See the figure here. We have two hollow thin spherical shells A and B of radii R, and R, respectively. Initially as shown in Fig. (i) shell B has a charge + Q which is uniformly distributed over its outer surface but shell B has no charge. At a particular instant the two spherical shells are connected by a thin copper wire as shown in Fig. (ii). After a couple of minutes two spherical shells A and B are disconnected again as shown in Fig. (iii).

Now answer the following questions :
Compare the final electrostatic energy stored in shell A with that in shell B.

Explanation

As electrostatic energy stored `u = 1/2 CV^2`
`rArr u_A/u_B = (C_1V^2)/(C_2V^2) = C_1/C_2 =R_1/R_2`