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

Explanation

In one second .10^9. electrons move out of the body.
The charge given out in one second = .10^9 * 1.6 * 10^-19 C.
= .1.6 * 10^-10.
Time required to accumulate a charge of 1C = .frac(1)(1.6 * 10^-10) sec = .6.25 * 10^9. second
= .frac(6.25 * 10^9)(365*24*60*60) years
= 198 years