Question

Why are the conductors of electric heating device such as bread toaster and electric iron made of an alloy rather than a pure metal

Answer 1

the appliances like iron, electric toaster, etc. works on the principle of heating effect of an electric current.

At high temperature pure metals can get oxidised and also pure metals have low resistivity

An alloy such as Nichrome, has high resistivity and can be heated to a high temperature without undergoing oxidation

Answer 2

As the alloys have high melting and boiling points and are better conductors of heat and electricity