Fine Structure Constant

What is permittivity of free space?

The permittivity of free space(ε0) is the capability of the classical vacuum to permit the electric field. It as the definite defined value which can be approximated to
ε₀ = 8.854187817 × 10^-12. F.m^-1 (In SI Unit)

What is electromagnetic force ?

The electromagnetic force is a type of physical interaction that occurs between electrically charged particles. It acts between charged particles and is the combination of all magnetic and electrical forces. The electromagnetic force can be attractive or repulsive.

State Faraday’s first law of electromagnetic induction.

Faraday’s first law of electromagnetic induction states that: Whenever a conductor is placed in a varying magnetic field, an electromotive force is induced. If the conductor circuit is closed, a current is induced, which is called induced current.

Define fine-structure constant.

Fine-Structure Constant characterises the strength or magnitude of coupling of any elementary charged particle(e) with the given electromagnetic field.

What is electromagnetism ?

Electromagnetism is a process where a magnetic field is created by introducing the current in the conductor.