Advertisements
Advertisements
प्रश्न
“Poles exist in pair”. Comment on this statement ?
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
Write true or false of the following statement.
Magnetic poles occur in pairs.
Write true or false of the following statement.
Magnetic keeper is a wooden piece.
Fill in the blank.
Magnetic poles always exist in ...............
Describe, how you will proceed to determine the position of the pole of a bar magnet.
Explain the mechanism by which unmagnetized iron nails get attracted to a magnet when brought near it.
Give scientific reason:
Soft iron is used to make electromagnets.
Explain the following:
Resistance of a conductor
Match the following:
| 1. | Electricity and magnetism | a. | Step-down transformer |
| 2. | Force on the conductor | b. | Hans Christian Oersted |
| 3. | Electric bell | c. | I LB |
| 4. | Ns <Np | d. | Electromagnet |
