Fewpal
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List three sources of magnetic fields.

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Three methods of producing magnetic field are as follows:
1.
Magnetic field can be produced by placing a permanent bar magnet or a horse-shoe magnet at the place, where magnetic field is required.
2.
Magnetic field is produced around a current-carrying straight conductor or a current carrying circular coil.
3. A very good method to produce
magnetic field is due to flow of current in a solenoid.

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