Question

if 10^9 electrone 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 ?​

Answer 1

Answer

6.25 × 10⁹ seconds

Explanation

We know that 1 electron has a negative charge of 1.6 × 10⁻¹⁹ C

So, for 1 Coulomb of charge, number of electrons required would be

$\sf\frac{1}{1.6\times 10^{-19}}\\\\= 0.625 \times 10^{19}\\\\= 6.25 \times 10^{18}$

Now, 10⁹ electrons move out of a body to another body in 1 second.

So, time required for 6.25 × 10¹⁸ electrons to move out of the body to another body would be

$\sf\frac{6.25\times10^{18}}{10^{9}}\\\\= 6.25 \times 10^{9}\ s$

6.25 × 10⁹ seconds are required to get a charge of 1 C on the second body.