Question

The number of electrons contained in one coulomb of charge is approximately:

Options

• \(6.25 \times 10^{-19}\)

• \(6.25 \times 10^{18}\)

• \(1.6 \times 10^{18}\)

• \(1.6 \times 10^{19}\)

Answer 1

Number of electrons \(n = \frac{q}{e} = \frac{1}{1.6 \times 10^{-19}} = 6.25 \times 10^{18}\). Thus one coulomb contains about \(6.25 \times 10^{18}\) electrons.