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Earth's Magnetic Field

It is commonl...

Question

It is commonly believed that the earth's magnetism is due to the

A

Presence of a huge permanent magnet in the interior of the earth

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B

Presence of electric current circulating in the interior of the earth

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C

Influence of sun's magnetic field

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D

Influence of a nuclear explosion

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Solution

The correct option is A Presence of electric current circulating in the interior of the earth
The Earth's magnetic field is generated by electric currents in the conductive material of its core, created by convection currents due to heat escaping from the core.

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