Question

Why are alloys commonly used in electrical heating device

Answer 1

Alloys are used in electrical heating devices rather than pure metals. Give one reason. Answer: Alloys are used rather than pure metals in electrical heating devices since they have low electrical conductivity and also a low melting point.

Hence, alloys which exhibit higher resistance than the virgin metals are used for heating elements. ... Most heating element used is nichrome 80/20 (80% nickel, 20% chromium) wire, ribbon, or strip. ... Material beneath this layer will not oxidize, preventing the wire from breaking or burning out.

Answer 2

Hi

Here's your answer

Alloys unlike metals meet the requirements of high mp & resistivity, when you create alloys form metals you form certain bonds between the metal and the other substance you mix to make the alloy these newly formed bonds bind the alloy(turned from metal due to doping) together and don’t let it melt free at relatively higher temperatures then parent metal.

For the same reason, less free electrons( all thanks to newly formed bonds which hold elections captive in localized region) the conductivity falls down ( charge careers reduced ie less electrons are free to conduct the current).

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