Question

In electronic circuits it is not unusual to encounter currents in the microampere range. Assume a 35 μA (micro Amp) current due to the flow of electrons in a circuit. What is the average number of electrons per second that flow past a fixed reference cross section that is perpendicular to the dir

Answer 1

Answer:

n = 21.85 x 10¹³

Explanation:

Current is formed by the flow of free electrons in a conductor . It is  defined as rate of flow of charge per unit area .

If the given current represents n electrons flowing through a unit cross- sectional area per unit time

n x 1.6 x 10⁻¹⁹ = 35 x 10⁻⁶

n =  $\frac{35\times10^{-6}}{1.6\times10^ {-19 }}$

n = 21.85 x 10¹³