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प्रश्न
Write true or false for a given statement.
In an electromagnet, the core is made up of copper.
विकल्प
True
False
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उत्तर
False
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संबंधित प्रश्न
Write true or false for a given statement.
An electric bell uses an electromagnet.
Fill in the blank
An electromagnet is used to separate large mass of ______ scrap.
Select the correct alternative
Electromagnets are made up of
Select the correct alternative
The purpose of armature in an electric bell is
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 ?
Name a domestic device in which an electromagnet is used ?
Draw a neat and labelled diagram of an electric bell and describe its working ?
The incomplete diagram of an electric bell is given in fig. Complete the diagram and label its different parts ?
Describe the construction and working of an electric bell with the help of a diagram.
