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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 electric bell uses an electromagnet.
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
What is an electromagnet?
Draw a labelled diagram to make a soft iron bar as an electromagnet. Describe in steps the procedure ?
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 ?
Draw a neat and labelled diagram of an electric bell and describe its working ?
Describe the construction and working of an electric bell with the help of a diagram.
