What is the value and dimensional formula for ∈ 0 ?

Permittivity of free space is given by ∈ 0 = q 1 q 2 4 π F r 2 . Its value is 8 . 85 × 10 - 12 F m - 1 . Here, the dimension of force is F = mass × acceleration = M × LT - 2 , charge is q = Current × Time = AT and dimension of r = L . Hence, the dimension of ∈ 0 = AT 2 MLT - 2 × L 2 = M - 1 L - 3 T 4 A 2 .

A body can have a charge of 1 . 0 × 10 - 19 coulomb. True or false

Charge on a body is quantized which means the charge on the body will be an integral multiple of e. i . e . Q = ± ne . . . 1 Where n is an integer. Equation 1 ⇒ 4 . 8 × 10 - 20 C = n × 1 . 6 × 10 - 19 C ⇒ n = 1 . 0 × 10 - 19 1 . 6 × 10 - 19 = 0 . 625 0.625 is not an integer. Hence, a body can't have a charge of 1 . 0 × 10 - 19 C False.

Name two basic properties of electric charge.

There are very two basic properties of electric charge. They are: 1. Conservative nature of charge Electric charge of a particle is conservative in nature. It means that the charge can neither be created nor be destroyed 2. Quantization of charge The charge of a system is a fixed quantity. Technically, the charge is a quantized quantity. The net charge of a system can be expressed as the integral multiples of the basic unit of charge