Question

Nichrome is used as a heating element because it has____________
a)high boiling point
b) high melting point
c) high resistivity
d) both (a)and (b)

Answer 1

Answer:

c) high resistivity

Explanation:

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.

Answer 2

nichrome is used as a heating element because it has high resistivity