CapacitanceMedium

Question

Two spherical conductors A1 and A2 of radii r1 and r2 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
                                                   Diagram

Options

A.
B.4π∈0 (r1 + r2)
C.4π∈0 r2
D.4π∈0 r1

Solution


All given charge of A1 goes to A2
Therefore C = 4π∈0r2 

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