The label ferromagnetic comes from the Latin word ferrum. What does ferrum mean?
AA magnetic stone
BA compass needle
CThe metal iron
DThe metal lead
Answer & Solution
Correct answer: C. The metal iron
1. Materials with strong magnetic effects are named ferromagnetic.
2. The name is taken from ferrum, the Latin word for iron.
3. Iron is the most familiar member of that group, which is why it lends its name.
_Source: OpenStax College Physics (CC BY 4.0), Ch 22 "Magnetism", section 22.2 Ferromagnets and Electromagnets_
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