Advertisements
Advertisements
प्रश्न
What is an artificial magnet? Why do we need artificial magnets?
टिप्पणी लिखिए
Advertisements
उत्तर
Artificial magnets are the magnets which are formed by bringing the natural magnet near it The artificial magnets have high retentivity means they remain magnetized for a long period of time and that is why they are used for making strong electromagnets.
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
Write true or false for a given statement.
A current-carrying coil, when suspended freely, can rest in any direction.
State two properties of a bar magnet ?
Explain the meaning of the term magnetic field ?
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?
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?
Describe a simple experiment to demonstrate that like poles repel each other while unlike poles attract.
Give scientific reason:
Soft iron is used to make electromagnets.
Give scientific reason:
Not attraction but repulsion is a sure test of magnetism.
Match the following.
| Magnetite | Magnetic lines |
| A tiny pivoted magnet | Natural magnet |
| Cobalt | Compass box |
| Closed curves | Ferromagnetic material |
| Bismuth | Diamagnetic material |
