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Assertion: Only a charge in magnetic flu...

Assertion: Only a charge in magnetic flux will maintain an induced current in the coil.
Reason: The presence of large magnetic flux through a coil maintains a current in the coil if the circuit is continuous.

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.

Text Solution

Verified by Experts

The correct Answer is:
C
Presence of magnetic flux cannot produce current.
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Magnetic flux through a coil depends upon

Assertion : The presence of large magnetic flux through a coil maintains a current in the coil if the circuit is continuous. Reason : Magnetic flux is essential to maintain an induced current in the coil.

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Assertion: Magnetic field B (shown inwards) varies with time t as shown. At time to induced current in the loop is clockwise Reason : If rate of change of magnetic flux from a coil is constant, charge should flow in the coil at a constant rate.

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

How magnetic flux generated in a coil depends on the current flowing through it?

The formula for induced e.m.f. in a coil due to change in magnetic flux through the coil is (here A = area of the coil, B = magnetic field)

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

Knowledge Check

  • This section contains Assertion and Reason type questions. 'Each question has 4 choices (1), (2),(3) and (4), out of which only one is correct. Assertion (A) Only a charge in magnetic flux will maintain an induced current the coil. Reason (R) The presence of large magnetic flux through a coil maintain a current in the coil if the circuit is continuous.

    A
    Both Assertion and Reason are correct and Reason Is the correct explanation of the Assertion
    B
    Both Assertion and Reason are correct but Reason Is not the correct explanation of Assertion
    C
    Assertion Is correct but Reason Is Incorrect
    D
    Assertion Is Incorrect and Reason Is correct

  • Assertion (A): Induced current in a coil is maintained only by a change in magnetic field. Reason (R): The presence of large magnetic flux through a coil maintains a current in the coil if the circuit is continuous.

    A
    Both (A) and (R) are true and (R) is the correct explanation of (A).
    B
    Both (A) and (R) are true but (R) is not the correct explanation of (A).
    C
    (A) is true but (R) is false.
    D
    (A) is false and (R) is also false.

  • Magnetic flux through a coil depends upon

    A
    number of turns
    B
    area
    C
    magnetic field
    D
    all of these
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