Question

What is the value of charge of a body that carries 20 excess electrons ?

Answer 1

Each electron has a negative charge of 1.6*10^-19 coulomb
So the 20 electrons will have a charge of = 20 *-1.6*10^-19 = -32 *10^-19 coulomb.

Answer 2

Charge,
`q=3.2* 10^(-18)\ Coulombs`

Step-by-step explanation:

We have to find the charge of a body that carries 20 extra electrons. We know that change on an electron is equal to :

`e=1.6* 10^(-19)\ Coulombs`

Using conservation of charge i.e. q = n e

n is number of electrons. Here, n = 20........(1)

Charge of a body that carries 20 excess electrons can be calculated equation (1).

So, charge
`q=20* 1.6* 10^(-19)\ Coulombs`

`q=3.2* 10^(-18)\ Coulombs`

Hence, this is the required solution.