Electromagnet vs Permanent Magnet

Study Centre is founded by Devrishi Bhardwaj.
The main advantage of an electromagnet over a permanent magnet is that the magnetic field can be quickly changed by controlling the amount of electric current in the winding.

This channel is started after getting inspiration from Sandeep Maheswari, Dr. Vivek Bindra, Study IQ, Prashant Dhawan, Mahipal singh Rathore, Green Board and osho.
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Electromagnet vs Permanent Magnet,
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Why use electromagnets instead of permanent magnets?,
Are electromagnets stronger than permanent magnets?,
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is an electromagnet a temporary or permanent magnet,
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Devrishi bhardwaj

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