Magnet se FREE ELECTRICITY kaise banaye| EMI | FARADAY'S LAW | generate INDUCED CURRENT by magnet |
Channel: rajesh batra official
Date: 2023-04-17

Magnet se free electricity kaise banaye | EMI | Faraday's laws | how to generate electricity by magnet | Lens's law | reverse of Oersted principle | magnetic field variation | magnetic flux.......
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       For free electricity we should understand about electro magnetic induction ie Faraday's laws and Lens's law....................      
     When a magnet comes near to the copper coil then the magnetic field lines of magnets will pass through the copper coil..............
As a magnet comes closer to a coil number of magnetic field lines will be increased through coil....as this number increases the magnetic flux will also be increased........................as this number increases continue the rate of change also increases ie induced EMF is produced means there will be a electric current
.........ie electric current without any source of electric current.........emi.
When a magnet comes closer or goes farther...it's magnetic field lines will pass through copper coil .
On closing , number of magnetic field lines will be increased and on going away these lines decreases or changing continuously.........
When a magnet comes closer to coil which is attached with a galvanometer we observe the deflection of its pointer towards either left or right.......the magnitude of deflection is directly proportion to rate of change in magnetic flux as this change in magnetic flux increase deflection will also be increased........on changing the polarity of magnets the deflection of pointer will be in opposite direction .......this change in direction of pointer of galvanometer is also occurred when we take magnet away from the coil.......
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On increasing the number of turns of copper coil the magnetic flux will increases ie rate of change in magnetic flux will also be increased ie induced EMF produces and same induced current is produced in copper coil but this opposes the change in magnetic flux or cause by which this current produces.......
If we bring north pole towards the coil , induced current produced in such direction ie anticlockwise means it creates north pole which oppose the magnet .......if we take the magnet away from the coil then the induced current will flow in clockwise direction ie south pole which attracts the magnet.........
This is Lens's law...................