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What is electromagnetic induction?...

What is electromagnetic induction?

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Electromagnetic Induction

The process of producing induced current in a closed circuit or in a coil by changing the magnetic field linked with the coil is called electromagnetic induction. At whatever point there is a relative movement between a magnet and a loop, a current is prompted in the curl because of the adjustment in the attractive field related with it. This procedure of delivering acceptance current is known as electromagnetic induction

Case 1

Let north pole goes inward, then the galvanometer shows deflection toward right (say).

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Knowledge Check

  • Which of the following phenomenon makes use of electromagnetic induction?

    A
    Magnetising an iron piece with a bar magnet
    B
    Magnetising a soft iron by placing it inside a current carrying solenoid
    C
    charging a storage battery
    D
    Generation of hydro electricity
  • According to Lenz's law of electromagnetic induction

    A
    the induced emf Es not in the direction opposing the change in magnetic flux
    B
    the relative motion between the coll and magnet produces change In magnetic flux
    C
    only magnet should be moved towards coll
    D
    only coll should be moved towards magnet
  • According to Faraday's law of electromagnetic induction

    A
    The direction of induced current is such that it opposes the cause producing it
    B
    The magnitude of induced e.m.f. produced in a coil is directly proportional to the rate of change of magnetic flux
    C
    The direction of induced e.m.f. is such that it opposes the cause producing it
    D
    None of the above
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