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प्रश्न
Select the correct alternative
Electromagnets are made up of
विकल्प
steel
copper
brass
soft iron
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उत्तर
soft iron.
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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.
Select the correct alternative
An electromagnet is used in
Select the correct alternative
The purpose of armature in an electric bell is
What is an electromagnet?
Name the material of an electromagnet?
Name two factors on which the strength of magnetic field of an electromagnet depends ?
Name a domestic device in which an electromagnet is used ?
Draw a neat and labelled diagram of an electric bell and describe its working ?
