Question

Explain electromagnetic induction.

Answer 1

When a conductor moves through a magnetic field a voltage is produced across the conductor this is called Electromagnetic induction. OR When a conductor is placed in a changing magnetic field causes the production of a voltage across the conductor is called Electromagnetic induction. This produced voltage causes a current to flow through the conductor which is called Induced current. Electromagnetic induction can be achieved by varying the magnetic flux associated with the conductor. Two ways of varying magnetic flux: 1)The conductor moves in a magnetic field. 2)The conductor is placed (not moving) in a varying(changing) magnetic field.

Answer 2

$\underline\bold{E.M.I.:-}$

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Electromagnetic induction (E.M.I.) is the phenomena opposite to the magnetic effect of current. according to this induced EMF induced current are Step Up in a circuit kept in the varying flux.

The phenomena of inducing EMF or current in a closed circuit or loop as a result of varying magnetic flux linked with it is called as electromagnetic induction or EMI.

$\underline{\bold{Origination:-}}$

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The origin of electromagnetic induction is the Lorentz Force that shift the electron from there position.

$\underline{\bold{Expression:-}}$

e is used to define Electromagnetic induction.

e is directly proportional to d¢/dt

e = - (d¢/dt)

This negative sign shows the opposing behaviour of emf