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प्रश्न
“Poles exist in pair”. Comment on this statement ?
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उत्तर
The magnetic poles always exist in pairs. It is not possible to separate the two poles of a magnet.
If a bar magnet is broken at the middle in two parts each part is found to be a magnet. Each part has the property to attract the small iron pieces. Each part rests in the North-South direction when suspended such as to swing freely. This shows that the new poles are formed at the broken ends.
If these pieces are broken again and again, each part will still found to be a complete magnet. Each part contains both the poles (N-pole and S-pole). Thus, the two poles of a magnet exist simultaneously.
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संबंधित प्रश्न
Write true or false for a given statement.
A current-carrying coil, when suspended freely, can rest in any direction.
Explain the meaning of the term magnetic field ?
Answer the following in detail.
Write a short note on the theory of magnetism.
Answer the following in detail.
List four methods of magnetizing a magnetic substance.
The figure shows a freely suspended magnet in the rest position. Copy the diagram and on its show:
- Angle of declination
- Angle in dip
Since every iron atom is a tiny magnet, why are not all iron bar magnets?
Match the following.
| Magnetite | Magnetic lines |
| A tiny pivoted magnet | Natural magnet |
| Cobalt | Compass box |
| Closed curves | Ferromagnetic material |
| Bismuth | Diamagnetic material |
Which is not attracted by a magnet?
What is the connection between electricity and magnetism?
The pole of a freely suspended magnet that points towards the north is called the south pole and what points towards the south is the celled north pole.
