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Induced Emf

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Induced E.M.F

Assertion (A): Whenever the magnetic flux linked with a closed coil changes there will be an induced emf as well as an induced current. Reason (R ) : Accroding to Faraday, the induced emf is inversely proportional to the rate of change of magnetic flux linked with a coil.

In the following figure, the magnet is moved towards the coil with a speed v and induced emf is e. if magnet and coil reced away from one another each moving with speed v , the induced emf in the coil will be

Assertion : There can be induced e.m.f. in an inductor even if the current through it is zero. Reason : Induced e.m.f. depends upon the rate of change of current rather than the current itself.

Statement-1 : The induced e.m.f. and current will be same in two identical loops of copper and aluminium, when rotated with same speed in the same magnetic field. Statement-2 : Induced e.m.f. is proportional to rate of change of magnetic field while induced current depends on resistance of wire.

Asseration:The induced e.m.f. and curent will be same in two identical loops of copper and aluminium, when rotated with same speed in the same magnetic field. Reason:Induced e.m.f. is proportional to rate of change of magnetic field while induced current depends on resistance of wire.

The cause of induced e.m.f is

The induced e.m.f in a circuit

The induced e.m.f. in a coil does not depend on