According to current theory, the Earth\'s magnetic field is most likely produced

Question

According to current theory, the Earth's magnetic field is most likely produced by:

A. electrical currents generated by convection movements in the molten iron of the Earth's outer core

B. large deposits of magnetite, iron, nickel, and other magnetic material in the Earth's crust

C. electrical currents generated by the potential difference between the negative charged surface of the Earth and its positive charged core

D. variations in the Earth's gravitational field caused by the relative motions of the Earth, moon, and sun

Explanation / Answer

Option A is thr right answer.

The movement of iron in the outer core generates the electric current which in turn generates the magnetic field. This self sustaining rule is called geo dynamo. The generated magnetic field are then aligned in same direction causing a vast magnetic field

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