Lets know about faradays laws
Faraday’s Laws of Electromagnetic Induction.
First law
It states :
Whenever the magnetic flux linked with a circuit changes, an e.m.f. is always induced in it.
or
Whenever a conductor cuts magnetic flux, an e.m.f. is induced in that conductor.
Second law
.It states :
The magnitude of the induced e.m.f. is equal to the rate of change of flux-linkages.
Explanation. Suppose a coil has N turns and flux through it changes from an initial value of Φ1
webers to the final value of Φ2 webers in time t seconds. Then, remembering that by flux-linkages mean the product of number of turns and the flux linked with the coil, we have
Initial flux linkages = NΦ1,
add
Final flux linkages = NΦ2
induced e.m.f. e = ( NΦ2-NΦ1)/t wb/s or volt
or
e = N{(Φ2-Φ1)/t} volt
Putting the above expression in its differential form, we get
If u have any doubts feel free to comment below
Faraday’s Laws of Electromagnetic Induction.
First law
It states :
Whenever the magnetic flux linked with a circuit changes, an e.m.f. is always induced in it.
or
Whenever a conductor cuts magnetic flux, an e.m.f. is induced in that conductor.
Second law
.It states :
The magnitude of the induced e.m.f. is equal to the rate of change of flux-linkages.
Explanation. Suppose a coil has N turns and flux through it changes from an initial value of Φ1
webers to the final value of Φ2 webers in time t seconds. Then, remembering that by flux-linkages mean the product of number of turns and the flux linked with the coil, we have
Initial flux linkages = NΦ1,
add
Final flux linkages = NΦ2
induced e.m.f. e = ( NΦ2-NΦ1)/t wb/s or volt
or
e = N{(Φ2-Φ1)/t} volt
Putting the above expression in its differential form, we get
Usually, a minus sign is given to the right-hand side expression to signify the fact that the induced e.m.f. sets up current in such a direction that magnetic effect produced by it opposes the very cause producing it
If u have any doubts feel free to comment below
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