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प्रश्न
State two common uses of electromagnets?
State two practical uses of electromagnets.
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उत्तर
- In electrical appliances such as electric bell, fan etc.
- In lifting heavy loads of iron scrap.
- To remove tiny particles of iron from the wound.
- In loading furnaces with iron.
- In the separation of magnetic substances from non-magnetic substances.
संबंधित प्रश्न
Write true or false for a given statement.
In an electromagnet, the core is made up of copper.
Write true or false for a given statement.
An electromagnet with soft iron core is a temporary magnet.
Fill in the blank
The strength of the magnetic field of an electromagnet is increased by inserting a core of soft ______
Select the correct alternative
An electromagnet is used in
Name the material of an electromagnet?
You are given a U shaped soft iron piece, insulated copper wire and a battery. Draw a circuit diagram to make a horse shoe electromagnet ?
Name two factors on which the strength of magnetic field of an electromagnet depends ?
State two ways by which the strength of the magnetic field of an electromagnet can be increased?
Draw a neat and labelled diagram of an electric bell and describe its working ?
The following diagram shows four circuits A, B, C and D. Each circuit has a cell and a torch bulb. Name the circuits in which the bulb will glow? Give reason to your answer.
