Question

Calculate the number of electron in charge of 5 coulomb

Answer 1

Charge of one electron = 1.602 x 10^-19 coulombs

No. of Electrons in 5 coulombs would be = 5 / (1.602 x 10^-19)

                                                                     =3.12 x 10^19 electrons

Answer 2

Given: Charge - Q = 5C

To Find: number of electrons in 5 coulombs of charge - n =?

Solution:

Formula used:

• Quantization of Charge - charge of any molecule is a discrete value multiple of the charge of a single electron.

• Q = ne (e = charge of a single electron) e = 1.6 × 10⁻¹⁹C

Applying the above Formula:

Q = ne

n = Q/e

n = $\frac{5C}{1.6 * 10^{-19}C }$

n = 3.13 × 10¹⁹ electrons

Hence, the number of electrons in 5 coulombs of charge = 3.13 × 10¹⁹ electrons.