What describes the maximum magnetization under an applied field?

What describes the maximum magnetization under an applied field?

• A. Magnetic Saturation
• B. Remanence
• C. Permeability
• D. Flux

Answer: (A)

When a magnetic field is applied to a ferromagnetic material, the magnetization M increases as magnetic domains align, but there is a limit when essentially all domains are aligned. That limit is magnetic saturation, the maximum magnetization the material can reach under the external field. Beyond this point, increasing the field barely changes M—the material can’t be magnetized any further by the field alone. In the B-H relationship, once saturation is reached, further increases in H mainly raise B by μ0H while M stays nearly constant. Remanence is the leftover magnetization after the field is removed, not the maximum under an applied field. Permeability describes how easily the material becomes magnetized (the slope relating B and H) and can vary with H, but it isn’t the maximum magnetization itself. Flux refers to the total magnetic field passing through an area, not the saturated magnetization.

When a magnetic field is applied to a ferromagnetic material, the magnetization M increases as magnetic domains align, but there is a limit when essentially all domains are aligned. That limit is magnetic saturation, the maximum magnetization the material can reach under the external field. Beyond this point, increasing the field barely changes M—the material can’t be magnetized any further by the field alone. In the B-H relationship, once saturation is reached, further increases in H mainly raise B by μ0H while M stays nearly constant. Remanence is the leftover magnetization after the field is removed, not the maximum under an applied field. Permeability describes how easily the material becomes magnetized (the slope relating B and H) and can vary with H, but it isn’t the maximum magnetization itself. Flux refers to the total magnetic field passing through an area, not the saturated magnetization.