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प्रश्न
Write true or false for a given statement.
In an electromagnet, the core is made up of copper.
पर्याय
True
False
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उत्तर
False
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संबंधित प्रश्न
Write true or false for a given statement.
An electromagnet with soft iron core is a temporary magnet.
Fill in the blank
An electromagnet is used to separate large mass of ______ scrap.
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
Select the correct alternative
An electromagnet is used in
Name two factors on which the strength of magnetic field of an electromagnet depends ?
State two common uses of electromagnets ?
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 ?
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.
