List three methods of producing magnetic fields

1.	List three methods of producing magnetic fields
Answer» Three methods of producing magnetic fields are as follows:(a) Magnetic field can be produced by placing a permanent magnet or a horse-shoe magnet at the place, where magnetic field is required.(b) Magnetic field is produced around a current carrying straight conductor or a current carrying coil.(c) A very good method to produce magnetic field is due to flow of current in a solenoid.

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