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प्रश्न
Bar magnets are often stored in pairs as shown in the figure. E and F being pieces of metal.
What is the material of darkened part?
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उत्तर
The darkened part is a non-magnetic material like wood.
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संबंधित प्रश्न
Fill in the blank
To light a table lamp and to run a refrigerator, we use ______ as the source of electricity.
What is a magnetic compass ? State its use.
Answer the following in short.
What is a magnet? Differentiate between natural and artificial magnets.
The real test of a magnet is ______.
Select the correct option:
The place around a magnet where its influence can be detected is called:
Draw lines of force surrounding a bar magnet when it is placed in the magnetic meridian with its north pole pointing geographic, north.
Draw a clearly labelled diagram, to show how a steel bar is magnetised by a divided touch method. A written description is not required.
Give scientific reason:
Two steel needles hanging from the lower end of a vertical bar magnet do not hang vertically.
Maximum iron filings stick in the middle of a bar magnet when it is brought near them.
Why it is not advisable to slide a magnet on an iron bar back and forth during magnetising it?
