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Direction of induced emf is given by :...

Direction of induced emf is given by :

A

Maxwell's law

B

Kirchhoff's law

C

Lenz's law

D

Ampere's law

Text Solution

Verified by Experts

The correct Answer is:
C
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Assertion (A) : Direction of induced emf in a circuit is predicted by Lenz's law. Reason (R) : Lenz's law is a consequence of the law of conservation of energy.

The direction of the induced e.m.f. is determined by

Knowledge Check

  • Asseration: The direction of induced e.m.f. is always such as to oppose the change that causes it. Reason: The direction of induced e.m.f. is given by Lenz's Law.

    A
    If both asseration and reason are true and reason is the correct explanation of assertion.
    B
    If both asseration and reason are true but reason is not the correct explanation of assertion.
    C
    If assertion is true but reason is false.
    D
    If assertion is false but reason is true.

  • Assertion :- If magnetic flux through any circuit is changes then an emf in induced in it . This emf is equal to negative of rate of changes of flux . Reason :- Direction of induced emf is always such that it always opposes 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 .

  • The unit of induced emf is

    A
    ampere
    B
    volt
    C
    joule
    D
    electron volt

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    A coil and a magnet moves with their constant speeds 5m//sec and 3m//sec . Respectively , towards each other, then induced emf in coil is 16 m V . If both are moves in same direction , then induced emf in coil :-

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