Mention the differences between an electromagnet and a permanent magnet.
Mention the differences between an electromagnet and a permanent magnet.
Physics
Science 7th Class
- asked 2 years ago
- B Butts
1Answer
Electromagnet
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It is temporary magnet and can be demagnetized.
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Magnetic strength can be changed.
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Its polarity can also be changed.
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It is prepared from soft iron.
Permanent magnet
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It is a permanent magnet and cannot be demagnetized easily.
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Its strength is fixed.
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Its polarity is fixed.
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It is prepared from hard steel.
गैल्वेनोमीटर किसे कहते है? What is a galvanometer?
- answered 2 years ago
- Community wiki
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