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Relevance. Rating Newest Oldest. Best Answer: In a generator, residual magnetism, also known as 'remanence' or remanent flux, is due to the hysteresis of the magnetic material in the core. When the current is removed, the magnetic flux often remains at some non-zero value. This is a characteristic phenomenon of ferromagnetic materials.
Diamagnetism. That branch of magnetism which treats of diamagnetic phenomena and of the properties of diamagnetic bodies. Diamagnetism is a property exhibited by substances with a negative magnetic susceptibility, that is, by substances which magnetize in a direction opposite to that of an applied magnetic field.A diamagnetic substance has a magnetic permeability less than 1, and is repelled when placed near a magnet.he induced magnetic moment J acquired by 1 mole of a diamagnetic substance is proportional to the intensity of the external field H, that is, J = Ï H. The coefficient X is called the molar diamagnetic susceptibility and has a negative sign, since J and H have opposite directions.