Question

How many electrons constitute a charge of 3 coulombs?

Answer 1

Hi

We know that one coulomb of charge have 6 multiplied by 10 power 18 electrons.
So, Three coulomb of charge have (6 x 3 x 10 power 18)electrons..

Answer 2

Given,

Charge amount=3C

To Find,

No. of electrons.

Solution,

We know charge of an electron = 1.602 x 10^-19 C

If, q = 1C

Then, q = ne

Where, n = number of electrons

            q = charge

            n = q / e

Where, n = 1C / 1.602 x 10^-19 C

             = 6.2 x 10^18 electrons.

Number of electrons in 1C = 6.2 x 10^18

Therefore, Number of electrons in 3C = 3 x 6.2 x 10^18

                                                                 = 1.86 x 10^19

Hence,1.86×10^19 no of electrons constitute a charge of 3 coulombs.