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प्रश्न
Name two factors on which the strength of magnetic field of an electromagnet depends ?
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उत्तर
The magnetic field of an electromagnet (I or U-shaped) can be increased by the following two ways :
- By increasing the number of turns of winding in the solenoid.
- By increasing the current through the solenoid.
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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.
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An electromagnet is used to separate large mass of ______ scrap.
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The strength of the magnetic field of an electromagnet is increased by inserting a core of soft ______
Select the correct alternative
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Draw a labelled diagram to make a soft iron bar as an electromagnet. Describe in steps the procedure ?
State two ways by which the strength of magnetic field of an electromagnet can be increased ?
State two common uses of electromagnets ?
Draw a neat and labelled diagram of an electric bell and describe its working ?
