1.

A sphere of 4 cm radius is suspended within a hollow sphere of 6 cm radius. The inner sphere is charged to potential 3 e.s.u. and the outer sphere is earthed. The charge on the inner sphere is                                          [MP PMT 1991]

A.            54 e.s.u.
B.                                      \[\frac{1}{4}\] e.s.u.
C.            30 e.s.u.
D.                                      36 e.s.u.
Answer» E.


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