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.

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.

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.

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.

Find the induced current through a coil at t = 2 s if the magnetic flux through a coil is $\varphi =6t^3+12t^2+5$ and the resistance of the coil is $5\Omega$.

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 $\varphi$ and the emf induced in it is $e$.