The relative permeability of materials is not constant
Correct answer: C. ferromagnetic
- A. diamagnetic
- B. paramagnetic
- C. ferromagnetic
- D. insulating
Explanation
Ferromagnetic materials have a strongly field-dependent permeability because their magnetic domains align and later become nonlinear or saturated. Diamagnetic and paramagnetic materials have permeability close to constant unity.
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