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प्रश्न
Give a reason for the following.
Electromagnets are temporary magnets.
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उत्तर
An electromagnet is a temporary magnet because it behaves like a magnet only till the current is passed through it. When the ~ current is stopped, it stops behaving like a magnet.
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संबंधित प्रश्न
Fill in the blank.
Temporary magnets are usually made up of .................
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Making a magnetic substance a magnet by bringing it closer to another magnet without touching it, is
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Name the material of the core of an electromagnet for temporary magnet.
Tick the most appropriate answer.
Temporary magnets are made of
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Temporary magnets are made of cobalt.
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You are given an iron strip. How will you make it into a magnet?
