Eddy currents are used in:

1. Induction furnace

2. Electromagnetic brakes

3. Speedometers

4. All of these

Subtopic:  Eddy Current |
 94%
From NCERT
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The slotting processes in a metallic sheet results in:

1. The increase of the resistance in the path for circulation of current.
2. Decrease in the strength of eddy current.
3. A feeble in the electromagnetic damping.
4. All of these
Subtopic:  Eddy Current |
 82%
From NCERT
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Eddy currents are induced when:

1. A metal block is kept in a changing magnetic field.

2. A metal block is kept in a uniform magnetic field.

3. A coil is kept in a uniform magnetic field.

4. Current is passed in a coil.

Subtopic:  Eddy Current |
 80%
From NCERT
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I:  A small magnet takes a longer time in falling into a hollow metallic tube without touching the wall.
II: There is an opposition to motion due to the production of eddy currents in a metallic tube.

Choose the correct option for the above statements:

1. Both I and II are true and II is the correct explanation for I.
2. Both I and II are true and II is not the correct explanation for I.
3. I is true but II is false.
4. I is false but II is true.
Subtopic:  Eddy Current |
 79%
From NCERT
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In which of the following devices, the eddy current effect is not used?

1. Electric heater

2. Induction furnace

3. Magnetic braking in train

4. Electromagnet

Subtopic:  Eddy Current |
 67%
From NCERT
NEET - 2019
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