The composition of alloy permalloy is iron and
- copper
-
nickel
- lead
- magnesium
The correct answer is: B
Explanation
The composition of permalloy is about 80% nickel and 20% iron. Permalloy is a magnetic alloy that's also known as an iron-nickel alloy or ferronickel alloy. It's used in electrical and electronic equipment as a magnetic core material and in magnetic shielding.
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