Question

State Faraday's law of electromagnetic induction?

Answer 1

Answer:

Faraday's first law of electromagnetic induction states that. whenever a conductor is placed in the varying magnetic field, electromagnetic fields are induced known as induced emf. If the conductor circuit is closed, a current is also induced which are called induced current.

Faraday's second law of electromagnetic induction states that, the magnitude of induced emf is equal to the rate of change of flux linkages with the coil. The flux linkages is the product of number of turns and the flux associated with the coil

Explanation:

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Answer 2

Answer:

Statement:  

According to Faraday’s law of electromagnetic induction, “emf produced in a coil is equal to the rate of change of magnetic flux through that coil”. If the circuit will be close, induced current will also flow through it.

Mathematically:  

Mathematically it can be represented as:

                                          ε= -Ndφ/dt     ........ (i)

Where,

N = Number of turns of the coil  

dφ/dt = Rate of change of magnetic flux

And negative sign shows that ‘’ emf induced will oppose its cause i.e. change in flux”.  

Magnetic flux through the coil can be changed by following methods:

(i) Moving coil back and forth near the bar magnet  

(ii) Moving bar magnet back and forth near the coil  

(iii) Rotating the coil in the magnetic field