Question

If 10^9 electrons move out of a body to a another body every second then how much time is required to get a charge of 1c

Answer 1

we know that 1 Coulomb = 6.242×1018 eletrons

given 10^9 electrons take 1 secs

=> 10^9 electrons ------> 1 sec

=> 1 electrons ---------> 1/(10^9) secs

=> 6.242×1018 ------> 6.242×1018/ (10^9)

= 6.242×109 secs = 6.242×109/ (60*60*24*365)  years

=197.93 years

Answer 2

Answer

In one second 10^9 electrons move out of the body.

Explanation

Charge of one electron= 1.6×10^-19 C

Charge of 10^9 electrons = 1.6×10^-19 C × 10^9

= 1.6×10^-10 C

We can say,1.6×10^−10 C of charge move out of the body to another body every second.

The time required to get a total charge of

1C = 1sec/1.6×10^-10 C

= 6.25×10^9 / 365×24×3600

= 197.8 years or approximately 198 years.

Hope it helps ! !