Whenever the magnet flux linked with a c...

Whenever the magnet flux linked with a coil changes, then is an induced emf in the circuit. This emf lasts

For a short time

For a long time

For ever

So long as the change in the flux takes place

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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.

The magnetic flux linked with a coil is phi and the emf induced in it is e .

Assertion :- Whenever magnetic flux linked with the coil changes with respect to time, then an emf is induced in ti . Reason :- According to law , the direction of induced current in any coil in such a way that it always oposses the cause by which it is produced.

STATEMENT - 1 : Whenever there is a change in flux linked with a coil in a circuit, an induced current is set up in it. and STATEMENT - 2 : Whenever there is a change in flux linked with a coil in a circuit, an induced emf is set up in it.

The rate of change of magnetic flux linked with the coil is equal to the magnitude of induced e.m.f.' this is the statement of

What is the change in magnetic flux produced in a coil in 25 s, if the induced e.m.f. In the coil is 2 mV ?

Faraday's second law of EMI says that the magnitude of e.m.f. induced in a cuicuit is directly proportional to the rate of change of magnetic flux linked with circuit, i.e., e prop (d phi)/(dt) . It means if the magnetic flux linked with a circuit changes at a faster rate, the induced e.m.f. is larger and vice-versa. Read the above passage and answer the following question : (i) Coil A is held in a very strong magnetic field and coil B is held in a weak magnetic field. In which coil do you expect larger induced e.m.f. ? (ii) A coil is moved in a uniform magnetic field. When do you expect induced e.m.f. in the coil ? (iii) What values of life do you learn from Faraday's second law of EMI ?

The magnetic flux linked with the coil changes from 0.1 Wb to 0.04 Wb in 3 s. the emf induced in the coil is

NARAYNA-ELECTRO MAGNETIC INDUCTION-C.U.Q 1

When ever the flux linked with a coil changes, then
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