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Two spherical conductors A and B of radii o and b (b > a) are placed con-centrically in air. The two are connected by a copper wire as shown in fig. Then the equivalent capacitance of the system is

a
4πε0abb−a
b
4πε0(a+b)
c
4πε0b
d
4πε0a

detailed solution

Correct option is C

The charge given to inner sphere will pass to the outer sphere. So, the capacitance of outer sphere will be 4πε0b.

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