why is an electromagnet used in an electric motor instead of a permanent magnet?? please answer it
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6
Answer:
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. However, unlike a permanent magnet that needs no power, an electromagnet requires a continuous supply of current to maintain the magnetic field.
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Answer:
electromagnet generate greater magnetic field
than permanent magnet
electromagnets magnetic field can be changed but the magnetic field of permanent magnets are fixed
polarity of electromagnet can be changed but the the permanent magnets
hope that helps u
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