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Answer : 3. "Alloys of aluminium, cobalt and nickel"
What are modern powerful magnets made of?
5Q:
What are modern powerful magnets made of?
- 1Iron compoundsfalse
- 2Ferromagnetic materialsfalse
- 3Alloys of aluminium, cobalt and nickeltrue
- 4Alloys of iron, cobalt and nickelfalse
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Answer : 3. "Alloys of aluminium, cobalt and nickel"
Explanation :
The strongest permanent magnets in the world are neodymium (Nd) magnets, they are made from magnetic material made from an alloy of neodymium, iron and boron to form the Nd2Fe14B structure.