A solid conducting sphere, having a charge Q is surrounded by an uncharged conducting hollow spherical shell. Let the potential difference between the surface of the hollow shell be V. If the shell given a charge of \[-\,4Q\]the new potential difference between the same two surface is:
A)\[-2V\]
B)2V
C)V
D)4V
Correct Answer:
C
Solution :
Shell will produce constant potential. Thus, new potential difference\[=V.\]