Question

Why are the conductors of electric heating devices, such as bread-toasters and electric irons, made of an alloy rather than a pure metal?

Answer 1

The conductors of electric heating devices, such as bread toasters and electric irons, are made of alloy instead of pure metal for the following reasons:

1. The resistivity of an alloy is higher than that of a metal, which produces a large amount of heat.
2. Oxidation of alloys does not occur quickly at high temperatures.
3. There is a negligible change in their resistance with an increase in temperature.