The magnetic material produced from the chemical combination of metal oxides and has a very high resistance to electric current is called?

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.