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Explain about temporary magnets.

Important Questions on Magnetism

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Science>Physics>Magnetism>Natural and Artificial Magnets
Artificial magnets are made in different shapes. Name these shapes and draw their sketches. 
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Science>Physics>Magnetism>Natural and Artificial Magnets
What are lodestones?
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Science>Physics>Magnetism>Natural and Artificial Magnets
It is simple to find poles of a bar magnet. Can you suggest a method to find the poles of a horseshoe magnet?
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Science>Physics>Magnetism>Natural and Artificial Magnets

Statement given below is incorrect. Write correct statement.

Magnetite is a powerful artificial magnet.

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Science>Physics>Magnetism>Natural and Artificial Magnets
A magnet can be demagnetized by
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Science>Physics>Magnetism>Natural and Artificial Magnets
The natural magnet was discovered in _____.
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Science>Physics>Magnetism>Natural and Artificial Magnets
What is the proper way of storing bar magnets when not in use? Draw a labelled sketch to show the arrangement.
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Science>Physics>Magnetism>Natural and Artificial Magnets
Show with the aid of a diagram how a wire is wound on a U-shaped piece of soft iron in order to make it an electromagnet. Complete the circuit diagram and label the poles of the electromagnet.
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Science>Physics>Magnetism>Natural and Artificial Magnets
Horse-shoe shaped magnets do not have poles.
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Science>Physics>Magnetism>Natural and Artificial Magnets
There exists only one shape of a magnet, which is bar magnet.
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Science>Physics>Magnetism>Natural and Artificial Magnets
Explain the difference between natural magnets and artificial magnets.
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Science>Physics>Magnetism>Natural and Artificial Magnets
What is the name of the iron ore which has the property of attracting magnetic materials?
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Science>Physics>Magnetism>Natural and Artificial Magnets
What are man-made magnets made from?
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Science>Physics>Magnetism>Natural and Artificial Magnets

Tick the magnet that can lift a heavier piece of iron. Give reasons for your choice.

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Science>Physics>Magnetism>Natural and Artificial Magnets
Give two uses of a magnetic compass.
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Science>Physics>Magnetism>Natural and Artificial Magnets
How are electromagnets different from bar magnets?
MEDIUM
Science>Physics>Magnetism>Natural and Artificial Magnets
The figure given below, shows the current flowing in the coil of wire wound around the soft iron horse shoe core. State the polarities developed at the ends A and B.
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Science>Physics>Magnetism>Natural and Artificial Magnets
State two advantages of an electromagnet over a permanent magnet.
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Science>Physics>Magnetism>Natural and Artificial Magnets

Explain the term.

Horseshoe magnet

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Science>Physics>Magnetism>Natural and Artificial Magnets
What are artificial magnets? Name their different shapes.