EASY
12th West Bengal Board
IMPORTANT
Earn 100

A bar magnet is pulled rapidly through a conducting loop along its axis with a uniform velocity with its south pole entering the loop first. Sketch qualitatively the induced current.

Important Questions on Electromagnetic Induction

EASY
12th West Bengal Board
IMPORTANT

A bar magnet is pulled rapidly through a conducting loop along its axis with a uniform velocity with its south pole entering the loop first. Sketch qualitatively the joule heating as a function of time (Take the induced current positive if it is clockwise when viewed along the path of the magnet).

MEDIUM
12th West Bengal Board
IMPORTANT

The figure given below shows two identical rectangular loops (1) and (2) placed on a table along with a straight long current carrying conductor between them. What will be the directions of the induced currents in the loops when they are pulled away from the conductor, with some velocity v?

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MEDIUM
12th West Bengal Board
IMPORTANT

The figure shows two identical rectangular loops (1) and (2) placed on a table along with a straight long current carrying conductor between them. Will the emf induced in the two loops be equal? Justify your answer.

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EASY
12th West Bengal Board
IMPORTANT

In the figure, a bar magnet falling under gravity through an air-cored coil C. Plot a graph showing the variation of induced emf(E) with time (t) What does the area enclosed by the E-t curve depict? 

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EASY
12th West Bengal Board
IMPORTANT
Two identical loops, one of copper and the other of aluminium are rotated with the same angular speed in the same magnetic field. Compare the induced emf in the two coils.
MEDIUM
12th West Bengal Board
IMPORTANT

Two identical loops, one of copper and the other of aluminium are rotated with the same angular speed in the same magnetic field. Compare the current produced in the two coils. Justify your answer.

EASY
12th West Bengal Board
IMPORTANT

In a given circuit, inductor L and resistor R have identical resistance. Two similar electric lamps B1 and B2 are connected as shown below. When switch S is closed, which one of the lamps lights up earlier.

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EASY
12th West Bengal Board
IMPORTANT

In a given circuit, inductor L and resistor R have identical resistance. Two similar electric lamps B1 and B2 are connected as shown in Fig. 9.52 When switch S is closed, will the lamps be equally bright after some time? Justify your answer.

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