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Radius of the earth is 6400 km. Determin...

Radius of the earth is 6400 km. Determine its capacitance in `muF`.

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Radius of the earth = 6400 km `=6400 xx 10^(3)` m.
Capacitance, `C=4pi in_0 R= (1)/(9 xx 10^(9))xx6400 xx 10^(3)`
`= (64)/(9) xx 10^(-4) = (6400)/(9) xx 10^(-6)F`
`711.1 muF`.
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