How many electrons are required to make -1C charge?

Correct option-4

Concept:

• Electric charge is the basic physical property of matter that causes it to experience a force when kept in an electric or magnetic field.
• An electric charge is associated with an electric field and the moving electric charge generates a magnetic field.
• A combination of electric and magnetic fields is known as the electromagnetic field.
• Interaction of the charges generates an electromagnetic force which is the foundation of Physics.

The two types of electric charges are:

1. Positive

2. Negative

Calculation:

Given-

Charge, Q = 1C

since we know that

Q = ne     ---(i)

where n is the number of electrons &

e is the charge on each electron.

As e = -1.6 × 10-19 C

On substituting the given values in equation (i), we get

1C = n(-1.6 × 10-19 C)

⇒n = -1C/(-1.6 × 10-19 C)

∴n = 6.25 × 1018

Hence, option - 4 is correct

A charge is quantized and the quantum of charge is e.

The charge on anybody will be some integral multiple of e,

i.e. q = ± ne where, n = 1, 2, 3…

Charge on anybody can never be in fractional form- 1e/2, 2e/5 etc