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the capacitance of a spherical capacitor is 1 microfarad . If the space between the spheres is 1mm , the radius of the outer sphere is
Dear Madhu C=4pi*epsilon 1 (1/ri)-(1/ro)ATQ- ro-ri=0.001m ,C=0.000001F 2putting 2 in 1therefore ro^2 -ro(0.001) -(9*1000000000*0.000000001) = 0therefore ro = 3 metres(approx) RegardsArun
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