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Monday, 18 May 2020

Faraday's law and lenz's law statement|electricaltechguru

Faraday's law of electromagnetic induction

Faraday's law of electromagnetic induction is tell us about how the flux links to another coil and what is the the actual magnitude of the EMF induced in that coil after the flux linkage, that flux should be a change in magnetic flux with constant coil position or constant magnetic flux with motion of conductor. That means any one of them should be in a changing for inducing EMF.

What is the Faraday's first law?
Faraday's first law of electromagnetic induction states that When change in magnetic flux links with the coil EMF is induced in that coil.
Faraday's law with change in magnetic flux
Faraday's law with change in magnetic flux


Due to that EMF, current will start flow through that coil through the load when load is connected on that coil.
Same as above fan a conductor cuts constant magnetic flux the EMF induced in that conductor because of motion of that conductor. The direction of induced EMF or current depends on direction of motion of that conductor as per the the Fleming right hand rule.


What is Faraday's 2nd Law?

Faraday's second law of electromagnetic induction states that magnitude of induced EMF in a coil is exactly equal to rate of change of flux linkage to the coil.
That means EMF induced in coil or conductor is depends on change in magnetic field, if the rate of change in magnetic field is low then EMF induced is also low and if the the rate of change in magnetic field is more than EMF induced in the coil is also more.

Related searches:

  1.  Fleming left hand rule
  2. Fleming right hand rule
  3. Working principle of transformer





Lenz’s law

Lenz's law is tell us about what will the direction of electric current flowing through the conductor, after the electromagnetic induction.
Lenz's law is normal difficult to understand but easy to learn about the direction of current that is flow after the electromagnetic induction.

Lenz law statement

After electromagnetic induction current flow through the conductor  that induced current flow in such direction that trying to oppose to causing changes in magnetic flux by which it is produced.
The current flow in such direction which is produced flux in opposite directions by which it is produced.

Lenz law explain
Example:
Suppose the magnetic flux increasing from 50 To 100 Weber that is change in magnetic flux that will  produce a EMF. that EMF will flow the current through coil after electromagnetic induction and that current it will produce the flux in in such a manner that will oppose to that change in magnetic flux which is from 50 to 100 weber.


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