MEDIUM
12th West Bengal Board
IMPORTANT
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A coil is connected to a low voltage bulb L and placed near another coil A  as shown in Figure. Explain the following observations: Bulb will light.

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Important Questions on Electromagnetic Induction

MEDIUM
12th West Bengal Board
IMPORTANT

A coil B is connected to a low voltage bulb L and placed near another coil A as shown in figure. Explain the following observations: Bulb gets dimmer if the coil is moved upwards.

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EASY
12th West Bengal Board
IMPORTANT

The closed loop PQRS is moving into the uniform magnetic field acting at right angles to the plane of the paper as shown in figure. State the direction in which the induced current flows in the loop.

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EASY
12th West Bengal Board
IMPORTANT

A plot of magnetic flux (Φ) versus current (I) is shown in figure for two inductors A  and B, Which of the two has larger value of self-inductance ?

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EASY
12th West Bengal Board
IMPORTANT

A rectangular loop and a circular loop are moving out of a uniform magnetic field to a field-free region with a constant velocity v as shown in figure. Explain in which loop do

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you expect the induced emf is constant during the passage out of the field region. The magnetic field is normal to the loops.

EASY
12th West Bengal Board
IMPORTANT
What is eddy current?
EASY
12th West Bengal Board
IMPORTANT
Why the core of the transformer is laminated?
EASY
12th West Bengal Board
IMPORTANT
The current I in a straight wire passing through the centre of conducting loop is increasing at a constant rate. What will be the emf induced in the loop?
EASY
12th West Bengal Board
IMPORTANT
Two circular loops of wire are at right angle to each other. If current in one changes, will current be induced in the other?