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A spherical capacitor consists of two co...

A spherical capacitor consists of two concentric spherical conductors held in position by suitable insulating supports. Show that the capacitance of a spherical capacitor is given by `C = (4pi epsilon_0 r_1 r_2) / (r_1-r_2)` . Where are `r_1` and `r_2` are the radii of outer and inner spheres respectively.

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