MEDIUM
12th West Bengal Board
IMPORTANT
Earn 100

On moving coils further apart, the electric current will. Two similar circular loops carry equal currents in the same direction.

50% studentsanswered this correctly

Important Questions on Electromagnetic Induction

MEDIUM
12th West Bengal Board
IMPORTANT
The graph between time (x -axis) and induced emf (y -axis) will be. Where flux linked with a circuit is given by Φ=t3+3t-7.
EASY
12th West Bengal Board
IMPORTANT
Energy associated with a moving change is due to
MEDIUM
12th West Bengal Board
IMPORTANT
Lenz's law of electromagnetic induction corresponds to the
MEDIUM
12th West Bengal Board
IMPORTANT

Then, the induced emf at the instant when radius  r is. A conducting circular loop is placed in a uniform magnetic field of induction B Tesla with its plane normal to the field. Now, the radius of the loop starts shrinking at the rate drdt.

MEDIUM
12th West Bengal Board
IMPORTANT
The magnitude of the field in Tesla is. Were wire of length 50 cm moves with a velocity of 300 m-min-1, perpendicular to a magnetic field. If the emf induced in the wire is 2 V
MEDIUM
12th West Bengal Board
IMPORTANT

Consider the statements:

(I) If magnetic field B=0, then magnetic flux is also zero.

(II) If magnetic flux, Φ=0, then magnetic field is also zero.

EASY
12th West Bengal Board
IMPORTANT
If a coil of 40 turns and area 4.0 cm2 is suddenly removed from a magnetic field, it is observed that a charge of 2.0×10-4 C flows into the coil. If the resistance of the coil is 80 Ω, then magnetic flux density (in Wb m-2 ) is
MEDIUM
12th West Bengal Board
IMPORTANT

A magnet N-S is suspended from a spring and when it oscillates, the magnet moves in and out of the coil C, Fig. 9.67. The coil is connected to a galvanometer G. Then, as the magnet oscillates

Question Image