According to the dynamo theory, the earth's magnetic field is associated with the electric currents produced by the coupling of the convection effects and rotation of the spinning several kilometers into space, and is called the magnetosphere liquid metallic outer core of the iron and nickel. The earth's magnetic field extends .The magnetosphere prevents the solar winds from entering the earth's surface.
A magnetic field is a vector quantity that surrounds magnets and electric currents. It exerts force on the moving electric charges and magnetic materials. Magnetic dipoles placed in a magnetic field tend to align their axes parallel to the field.
Magnetic field's energy The magnetic field producers are dipolar in nature.density is directly proportionate to the square of the field intensity.permanent magnets produce a persistent magnetic field and have both a north pole and a south pole.
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