EASY
10th ICSE
IMPORTANT
Earn 100

The following diagram in Figure shows a coil of several turns of copper wire near a magnet NS. The coil is moved in the direction of arrow shown in the diagram.

In what direction does the induced current in coil flow?

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Important Questions on Electro-Magnetism

EASY
10th ICSE
IMPORTANT

The following diagram in Figure shows a coil of several turns of copper wire near a magnet NS. The coil is moved in the direction of arrow shown in the diagram.

Name the law used to arrive at the conclusion.

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MEDIUM
10th ICSE
IMPORTANT

The following diagram in Figure shows a coil of several turns of copper wire near a magnet NS. The coil is moved in the direction of arrow shown in the diagram.
How would the current in coil be altered if (a) the coil has twice as many turns, (b) the coil was made to move three times as fast?

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EASY
10th ICSE
IMPORTANT

The following diagram in Figure shows a fixed coil of several turns connected to a centre zero galvanometer G and a magnet NS which can move in the direction shown in the diagram.

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Describe the observation in the galvanometer if the magnet is moved rapidly.

EASY
10th ICSE
IMPORTANT

The following diagram in Figure shows a fixed coil of several turns connected to a centre zero galvanometer G and a magnet NS which can move in the direction shown in the diagram.

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Describe the observation in the galvanometer if the magnet is kept still after it has moved into the coil.

MEDIUM
10th ICSE
IMPORTANT

The following diagram in Figure shows a fixed coil of several turns connected to a centre zero galvanometer G and a magnet NS which can move in the direction shown in the diagram.

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Describe the observation in the galvanometer if the magnet is then rapidly pulled out of the coil.

EASY
10th ICSE
IMPORTANT

The following diagram in Figure shows a fixed coil of several turns connected to a centre zero galvanometer G and a magnet NS which can move in the direction shown in the diagram.

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How would the observation in part (a) alter if a more powerful magnet is used?

EASY
10th ICSE
IMPORTANT

The following diagram in Figure shows a coil X connected to a sensitive centre-zero galvanometer G and a coil P connected to a battery through a switch S.

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Describe the observation when the switch S is (i) closed suddenly, (ii) then kept closed, (iii) finally opened.

EASY
10th ICSE
IMPORTANT

The following diagram in Figure shows a coil X connected to a sensitive centre-zero galvanometer G and a coil P connected to a battery through a switch S.

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Name and state the law which explains the above observations.