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प्रश्न
Why it is not advisable to slide a magnet on an iron bar back and forth during magnetising it?
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उत्तर
It is not advisable to slide a magnet on an iron bar back and forth because moving it in opposite directions will work to cancel each other out.
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संबंधित प्रश्न
Match the following
| Column A | Column B |
| A) Steel | 1) to store magnets |
| B) Soft iron | 2) temporary magnet |
| C) Use in electric bell | 3) permanent magnet |
| D) Magnetic keepers | 4) electromagnet |
Answer the following.
Why is it not possible to isolate a single magnetic pole?
Define the following term regarding a bar magnet:
Magnetic axis
There is repulsion between the _____ poles of a magnet and attraction between its _____ poles.
A magnet remains steady in a ________ direction.
Draw lines of force surrounding a bar magnet when it is placed in the magnetic meridian with its north pole pointing geographic, north.
If a magnet is carefully broken into two pieces as shown in figure (i), how does the magnetic strength of each piece compare with that of the original magnet? If another magnet is carefully broken in half along its long axis shown in figure (ii), how would the strength of each piece compare with that of the original magnet?
Give scientific reason:
Soft iron is used to make electromagnets.
Explain the following:
Resistance of a conductor
Define artificial magnet.
