To completely remove any remaining magnetic flux density from the sample of magnetic material, the magnetic field strength must be reversed to a value termed its
A) remenance
B) saturation
C) coercivity
D) hysteresis

Question

Quizplus · Accepted Answer

Coercivity refers to the magnetic field strength required to completely remove any remaining magnetic flux density from a sample of magnetic material. It is the measure of how resistant the material is to demagnetization, and reversing the magnetic field to this strength will ensure that all magnetization is removed. Remenance refers to the residual magnetic flux density that remains in a material even after the magnetizing field has been removed, while saturation refers to the maximum amount of magnetic flux density that a material can hold. Hysteresis refers to the lagging of magnetic field strength behind the magnetization of the material, which results in a hysteresis loop on a graph of magnetic flux density versus magnetic field strength.

To Completely Remove Any Remaining Magnetic Flux Density from the Sample