Two spherical conductors A 1 and A 2 of radii r 1 and r 2 are placed concentrically in air. The two are connected by a copper wire as shown in figure. Then the equivalent capacitance of the system is
A
B
4 π∈ 0 (r 1 + r 2 )
C
4 π∈ 0 r 2
D
4 π∈ 0 r 1
Text Solution
Verified by ExpertsThe correct answer is:
C
All given charge of A 1 goes to A 2
Therefore C = 4 π∈ 0 r 2
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