Final answer:
Earth's magnetic field is generated by electric currents in the liquid outer core of the Earth, shielding us from harmful radiation.
Explanation:
Earth's magnetic field is primarily influenced by electric currents in the liquid outer core of the Earth, composed of highly conductive molten iron. The magnetic field is generated through a feedback loop involving Ampère's law, Faraday's law, and the Lorentz force exerted on flowing charges. This magnetic field shields the Earth from harmful radiation from the Sun.
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