What is the amount of magnetism that remains in a temporary magnet referred to as?

The term used to describe the amount of magnetism that remains in a temporary magnet is known as Residual Magnetism. When a temporary magnet, such as a soft iron core, is magnetized by an external magnetic field, it typically loses its magnetism once that field is removed. However, some residual magnetism may remain in the material after the external influence is no longer present. This residual magnetism can be quantified and is significant in understanding how certain materials behave in magnetic applications.

Hysteresis is related but refers to the lag between the magnetization of the magnet and the applied magnetic field, not specifically the residual magnetism. Magnetic Retention, while sounding similar, is not a standard term used in the context of magnetism. Induced Magnetism describes the process by which a non-magnetic material becomes magnetic in the presence of a magnetic field, but it does not specifically refer to the remaining magnetism once the field has been removed. Thus, Residual Magnetism is the precise term that captures the concept of lingering magnetic properties in temporary magnets.