A. ferrite substance
B. paramagnetic substance
C. ferromagnetic substance
D. diamagnetic substance
Correct Answer:
Option A – ferrite substance
Explanation
Ferrite magnets are non-conductive aferromagnetic ceramic compounds derived from iron oxides such as Haematite (Fe203) or Magnetite (Fe304) and other metal oxides such as Barium and Strontium.
Ferrite is a polycrystal, sintered material with high electrical resistivity. The high resistance of ferrite makes eddy current losses extremely low at high frequencies.
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