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PiyushW · Answer 1 · 2022-04-26T17:00:50+0000

What is a magnetic field and how is it created?
If you have a rotating electric current, it will create a magnetic field. On Earth, flowing of liquid metal in the outer core of the planet generates electric currents. The rotation of Earth on its axis causes these electric currents to form a magnetic field which extends around the planet.

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