Question

What is Faraday's law and Lenz law?

Answer 1

Faraday's laws:

Faraday’s laws describe how an electric current produces a magnetic field and conversely how a change in the magnetic field will produce a current through the conductor.

There are two laws of electromagnetic induction as stated by Michael Faraday.

Faraday's First laws: 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.

Faraday's Second laws: The induced emf in a coil is equal to the rate of change of flux linkage.

$\mathrm{\epsilon }\propto \mathrm{N}\frac{\mathrm{d\varphi }}{\mathrm{dt}}$

where,$\mathrm{N}$ is the number of turns, $\mathrm{\varphi }$ is the magnetic flux, and $\mathrm{\epsilon }$ is the electromotive force

Lenz Law: When a magnetic field induces a current in a conducting coil, the induced current also generates its own magnetic field that points opposite to the inducing magnetic field.