Faraday’s Laws and its applications
Presentation by Sayan Samanta
Department-Electrical Engineering
Semester-3rd
Roll No-194
Faraday’s Law of Electromagnetic Induction
Faraday’s Law is the result
of the experiments of the
English Chemist and
Physicist Michael Faraday(
1791-1867).
Faraday’s Laws of Electromagnetic
Induction
First Law:-Whenever the magnetic flux linked with a
circuit changes,an e.m.f is always induced in it.
Second Law:-The magnitude of the induced e.m.f is
equal to the rate of change of flux-linkages.
Faraday’s Law of Induction
t
N B



induced
emf
number
of loops
rate of change
of flux with time
Minus sign from Lenz’s Law:
Faraday’s Law of Induction
Lenz’s Law
The current from the induced emf will produce a magnetic field,which will always
oppose the original change in the magnetic flux.
Magnetic flux:
Unit of magnetic flux: weber, Wb.
1 Wb = 1 T·m2
Faraday’s law of induction:
[1 loop]
[N loops]
Faraday’s Law of Induction
Lenz’s Law
This effect can be quantified by Faraday’s Law
Experimental Observation of Induction
Fig. 1 Fig. 2 Fig. 3
Applications of Faraday’s
Law
Electric Guitar
Pickups
Generator
Electromagnetic Induction
Magnetic Recording
Electromagnetic Induction
1. Transformers
2.Induction Cookers
3.Electromagnetic Flow Meters
Conclusion
Thank You
Any Question

Faraday's law's and its applications

Editor's Notes