Question

list two method producing magnetic fileds

Answer 1

Methods of producing magnetic fields:
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1. BY USING permanent magnet we can produce magnetic field and can visualize by spreading iron filings on a white paper keeping magnet beneath the paper.
2. A CURRENT carrying straight conductor can produce magnetic field.
3. We can also use different types of conductors like circular loop , solenoid to see the presence of magnetic field.
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Answer 2

Magnetic field can be produced by using electro magnet. and the second way is you can use current through circular loop.