Question

How many electrons are passing per second in a circuit in which there is a current of 5 A?

Answer 1

Current I = 5A 

Time (t) = 1 second 

Charge of electron e = 1.6 × 10^-19 C

I = \(\frac{q}{t}\) = \(\frac{ne}{t}\)

Number of electron, n = \(\frac{It}{e}\) = \(\frac{5 \times 1}{1.6 \times 10^{-19}}\)

n = 3.125 x 10¹⁹