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Magnetism of a substance depends on the movements of the surface electrons. We know that when a charged particle moves in a direction it generates a field in the perpendicular to the direction of motion. this field has the tendency to attract iron particles and thus called a magnetic field.

All metals have free surface electrons but only some has the tnedency to magnetise easily. Read about diamagnetism, paramagnetism and ferromagnetism.

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11y ago

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