Question

is two methods of producing magnetic field​

Answer 1

Using a permanent magnet made up of steel

And

Wounding a coil iron soft iron core and passing current through it :)

Answer 2

Three methods of producing magnetic fields are as follows: (a) Magnetic field can be produced by placing a permanent magnet or a horse-shoemagnet at the place, where magnetic field is required. (b) Magnetic field isproduced around a current carrying straight conductor or a current carrying coil

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