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Flux linked through following coils chan...

Flux linked through following coils changes with respect to time then for which coil an e. m . F. is not induced :-

A

Copper coils

B

Wood coil

C

Iron coil

D

None

Text Solution

Verified by Experts

The correct Answer is:
D
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When current in a coil changes with time, how is the back e.m.f. induced in the coil related to it ?

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Knowledge Check

  • Manetic flux through a coil is changes with respect to time then emf induced in it which incorrect regarding induced emf in coil :-

    A
    Coil may be made up with wood
    B
    Coil may be connected with an open circuit
    C
    Coil must be of conducting nature
    D
    Induced emf does not depends upon resistance of the coil

  • Magnetic flux linked through the coil changes with respect to time accourding to following graph, then induced emf v/s time graph for coil is :-

    A
    B
    C
    D

  • 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.

    A
    If the Assertion & Reason are True & the Reason is a correct explanation of the Assertion .
    B
    If both Assertion & Reason are True & the Reason is not a correct explanation of the Assertion.
    C
    If Assertion is True but the Reason is Fasle.
    D
    If both Assertion and Reason are False .

    • Similar Questions

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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.

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