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प्रश्न
State two common uses of electromagnets ?
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उत्तर
Uses of electromagnet —
- 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 separation of magnetic substances from the non-magnetic substances.
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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 electric bell uses an electromagnet.
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
Electromagnets are made up of
Draw a labelled diagram to make a soft iron bar as an electromagnet. Describe in steps the procedure ?
Name a domestic device in which an electromagnet is used ?
The incomplete diagram of an electric bell is given in fig. Complete the diagram and label its different parts ?
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.
Describe the construction and working of an electric bell with the help of a diagram.
