Question

What is the current flowing through a conductor if one million electrons in one millisecond pass through a cross section of it?

Answer 1

We know,

            I = Q/T

Charge of one electron  = -1.602 * 10⁻¹⁹

Charge of 10⁵ electrons= -1.602 * 10⁻¹⁹⁺⁵

                                         = -1.602 * 10⁻¹⁴ Coulombs

T = 10⁻⁵

I = -1.602*10⁻¹⁴/10⁻⁵

 = -1.602 * 10⁻⁹A is the current flowing through a conductor