What was the recognition of Earth’s magnetic field ? State dynamo effect
What was the recognition of Earth’s magnetic field ? State dynamo effect
Recognition of Earth's magnetic field was that a giant bar magnet placed along the axis of rotation of the Earth and deep in the interior. Magnetic field arising due to this reason. The magnetic field is now thought to arise due to electrical currents produced by convective motion of metallic fluids (consisting mostly of molten iron and nickel) in the outer core of the Earth, due to this reason magnetic arises. This is known as the dynamo effect.
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- [IIT 1970]
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- [JEE MAIN 2022]