When temperature is above ferromagnetic Curie temperature, a ferromagnetic material
Options
A. becomes a paramagnetic material
B. becomes a very strong ferromagnetic material
C. becomes diamagnetic material
D. none of the above
Correct Answer
becomes a paramagnetic material
Explanation
Above ferromagnetic Curie temperature, ferro-magnetic material behaves as a paramagnetic material.
More questions
1. If an amplifier with gain of - 1000 and feedback factor ? = - 0.1 had a gain change of 20% due to temperature, the change in gain of the feedback amplifier would be