Faraday's law of electromagnetic induction is also known as law of electromagnetism.
Faraday's first law:-
This law is the base of electric generators and motors.
Faraday's law stated that,"When ever we place a conductor in a magnetic field which is varying with time then there will induced current in the conductor."
And if conductor is connected to a closed circuit then this current will flow through it.
Explanation:-
If a conductor is placed in a field of magnet, if both conductor and magnet are stationary then there will no induced emf in it. But when we will move magnet away from the conductor then magnetic field will change through conductor and then EMF(electromotive force) will induced in conductor. Even if we keep magnet stationary and move conductor then also emf will induced.
Faraday's Second law:-
We use this law often,
"The EMF induced in a coil is equal to the change of flux(by a magnet or something other) with the time. "
Where E is the induced EMF, and N is the number of turns of coil phi is the flux and t is the time.
Explanation:-
When a current is flowing through the coil then there is flux around the coil, when current will change then flux will also changes. And then EMF will induce in a coil.
The induced EMF could increase by:
1.By increasing the number of turns of coil.
2. By increasing rate of changing flux. by changing current rapidly.
3. By using good core on which coil is wound.
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