Question

Which material is used to make heating coil in heating appliances. Why?​

Answer 1

Answer:

nichrome is mainly used to make heating coil in appliances because it has relatively high resistance and forms an adherent layer of chromium oxide when it is heated for the first time

Explanation:

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Answer 2

Nichrome: Most resistance wire heating elements use nichrome 80/20 (80% nickel, 20% chromium) wire, ribbon, or strip. Nichrome 80/20 is an ideal material, because it has relatively high resistance and forms an adherent layer of chromium oxide when it is heated for the first time.