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If we treat the earth as a conducting sphere of radius 6400 km, its capacitance would be of the order of

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If we treat the earth as a conducting sphere of radius 6400 km, its capacitance would be of the order of 

(a) 1 μF 

(b) 1 mF 

(c) 1 F 

(d) 103 F

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1 Answer

+1 vote
by (51.2k points)
edited by

Correct Answer is: (b) 1 mF 

C = 4πε0R R = 6.4 x 106/9 x 109  F ~ 10-3 F.

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