Question

calculate the number of electrons when the charge is equivalent to 3C please give step by step answer with explanation ​

Answer 1

Answer- The above question is from the chapter 'Electricity'.

Electrons are negatively charged particles. They are represented by e⁻.

The electronic charge i.e. e= 1.6 × 10⁻¹⁹ C

We will use the concept of Quantization of a charge.

The required formula is Q= ne

Here, Q= Amount of change (in Coulombs)

n= Number of electrons

e= Electronic charge

We are given that amount of charge (Q)= 3 C

Using the above formula,

Q= ne

3= n × 1.6 × 10⁻¹⁹ C

3 ÷ 1.6 × 10⁻¹⁹ C = n

3 × 10¹⁹ ÷ 1.6 = n

n=  1.875 × 10¹⁹ electrons

∴ 3 C of charge contains 1.875 × 10¹⁹ electrons.

Answer 2

Answer:

$\Large{\mathsf{n = 1.875 × 10^{19}}}$

Explanation:

Refer the attached picture.