Physics
Grade-10
Easy
Question
In a commercial electric motor, the two permanent magnets are replaced with ____.
- Single bar magnet
- Horseshoe magnets
- Electromagnets
- Soft iron pieces
Hint:
In commercial electric motors field coils are used for producing magnetic fields and not a permanent magnet. These coils become magnetized when current is passed through them.
The correct answer is: Electromagnets
- In commercial electric motors field coils are used for producing magnetic fields and not a permanent magnet. These coils become magnetized when current is passed through them. Field coils give a stronger, more easily shaped magnetic field than permanent magnets.
-
In a commercial electric motor, the two permanent magnets are replaced with _Electromagnets
- In commercial electric motors field coils are used for producing magnetic fields and not a permanent magnet. These coils become magnetized when current is passed through them. Field coils give a stronger, more easily shaped magnetic field than permanent magnets.
-
In a commercial electric motor, the two permanent magnets are replaced with _Electromagnets
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