EASY
Earn 100

MAGLEV train incorporates the magnetic forces to lift, propel and guide the track.

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Important Questions on Magnetism

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Science>Physics>Magnetism>Usages of Magnets
People who made mariner’s compass for the first time.
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Science>Physics>Magnetism>Usages of Magnets
Where is an electric crane used?
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Science>Physics>Magnetism>Usages of Magnets
Which of the following magnets is used in a speaker?
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Science>Physics>Magnetism>Usages of Magnets
How you separate metal scrap from a heap of waste material in a scrap yard?
HARD
Science>Physics>Magnetism>Usages of Magnets
How does the electromagnetic train work?
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Science>Physics>Magnetism>Usages of Magnets

Which magnet will you use when the iron is to be separated from trash?

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Science>Physics>Magnetism>Usages of Magnets

Choose the odd one and give reason:

Lift, escalator, electromagnetic train, electric bulb.
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Science>Physics>Magnetism>Usages of Magnets
Give the reason behind using a large magnet in loudspeakers and the reason behind using a small magnet in headphones? 
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Science>Physics>Magnetism>Usages of Magnets
What may be the reasons for keeping big speakers in the sound boxes and small ones in headphones?
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Science>Physics>Magnetism>Usages of Magnets

Write any two uses of magnet.

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Science>Physics>Magnetism>Usages of Magnets

Write the uses of a magnet.

MEDIUM
Science>Physics>Magnetism>Usages of Magnets
Write the differences between a normal train and an electromagnetic train.
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Science>Physics>Magnetism>Usages of Magnets

A soft-iron rod and a steel rod each have coils around them. Both rods are initially un-magnetised. The coils are attracted to circuits, as shown in the second diagram.

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Which of the two arrangement would be used as the electromagnet on the crane in a scrap metal yard?

MEDIUM
Science>Physics>Magnetism>Usages of Magnets

Describe a method by which you could directly measure the strength of an electromagnet's field by measuring the force produced by it and compare the strengths of different electromagnets. You should note the factors that affect the strength of the field and how you would vary them?

EASY
Science>Physics>Magnetism>Usages of Magnets
Describe a method by which you could directly measure the strength of an electromagnet's field by measuring the force produced by it and compare the strengths of different electromagnets. You should note the factors that affect the strength of the field and how you would vary them?
HARD
Science>Physics>Magnetism>Usages of Magnets

How will you make levitating propeller?

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Science>Physics>Magnetism>Usages of Magnets
On what principle does the electromagnetic train works?
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Science>Physics>Magnetism>Usages of Magnets
Name the train that makes use of electromagnets for propulsion. (Electromagnetic train/electric train)