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If 10^(9) electrons move out of a body t...

If `10^(9)` electrons move out of a body to another body every second, then the time required to get a total charge of 1 C on the other body is

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t= ( 1 C )/( 10 ^(9) xx 1.602 xx 10^(-19)C //s)`
`= 6.25 xx 10^(9)s =198 `years
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