What is Residual Magnetism | Remanence or Remanent Magnetization

Remanence or remanent magnetization or residual magnetism is the magnetization abandoned in a ferromagnetic material (like iron) after an outer attractive field is eliminated. Casually, when a magnet is "charged" it has remanence The remanence of attractive materials gives the attractive memory in attractive storage gadgets, and is utilized as a wellspring of information on the past Earth's attractive field in paleomagnetism. The word remanence is from remanent + - ence, signifying "what remains".

The same term residual magnetization is by and large utilized in designing applications. In transformers, electric motors and generators a huge residual magnetization isn't alluring (see likewise electrical steel) as it is an undesirable tainting, for instance a magnetization staying in an electromagnet after the flow in the loop is killed. Where it is undesirable, it tends to be eliminated by degaussing. 

Some of the time the term retentivity is utilized for remanence estimated in units of attractive transition thickness.

What is the Residual Magnetism of Generator?

Residual magnetism is defined as the amount of magnetization left behind after removing the external magnetic field from the circuit. This phenomenon of the residual magnetism is widely seen in the transformers, generators, and motors. It is also called as Remanence.