Use of Electro Magnet Electric bell
Use of Electro Magnet Electric bell
Electromagnet : It is a magnet made by using electric current. An electromagnet works on the magnetic effect of current.
Use of Electromagnet:
1. Electromagnets are used in cranes to pick up cars in scrap yard and also to separate iron from garbage dump.
2. They are also used in loudspeakers, telephones, and in electric motors which are used in electric fans, washing machines, refrigerators, etc. electromagnets are also used in electric bell.
3. These magnets have their utilization in electric generators where very strong magnetic field is required.
4. For deflection electron beam of the picture tube of TV,electromagnets are used.
5. For magnetic separation of iron ores form the earthy substances, electromagnets are used.
6. For preparing strong permanent magnets, electromagnets are used.
7. Used for separating pieces of iron from wounds.
8. Electromagnet are also used loading furnaces with iron.
9. It is also used in research to study the magnetic properties of a substance in a magnetic field .
Which of the following are correct ? (a) Electromagnets are used in cranes to pick up cars in scrap yard and also to separate iron from garbage dump. (b) An electric bell has an electromagnet that pulls a strip of iron which makes the hammer hit the gong to ring the bell. | |||
| Right Option : C | |||
| View Explanation | |||
Electromagnet are also used loading furnaces with______________. | |||
| Right Option : B | |||
| View Explanation | |||
The electric bell has a ___________ electromagnet. | |||
| Right Option : C | |||
| View Explanation | |||
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