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प्रश्न
Write true or false for a given statement.
An electromagnet with soft iron core is a temporary magnet.
पर्याय
True
False
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उत्तर
True
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संबंधित प्रश्न
Write true or false for a given statement.
In an electromagnet, the core is made up of copper.
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
Name the material of an electromagnet?
You are given a U shaped soft iron piece, insulated copper wire and a battery. Draw a circuit diagram to make a horse shoe electromagnet ?
Name two factors on which the strength of magnetic field of an electromagnet depends ?
State two ways by which the strength of magnetic field of an electromagnet can be increased ?
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 ?
