Two spherical conductors A and B of radius a and b (b > a) are placed in air concentrically B is given charge + Q coulomb and A is grounded. The equivalent capacitance of these is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
The charge Q given to outer sphere distributes as Q 1 outside and Q 2 inside which induces charge – Q 2 on outside of inner sphere, + Q 2 on inside of inner sphere which is earthed.
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