Why is permanent magnetic field present on earth? – InterviewSolution

InterviewSolution

1.	Why is permanent magnetic field present on earth?
Answer» tion:The magnetic FIELD is GENERATED by electric currents due to the motion of convection currents of a mixture of molten iron and nickel in the EARTH's outer core: these convection currents are caused by heat ESCAPING from the core, a natural process called a geodynamo.

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