Question

(a) :-
why are electric heat exchangers such as toasters and electric press conductors made of alloys instead of pure metals?
(b) :-
what effect does height increase have on resistance? in two resistances of equal area the length of the first is twice as long as the second?
Plz tell me the answer.. ​

Answer 1

Answer:

(a) The resistivity of an alloy is generally higher than that of its constituent metals. Alloys do nor oxidise burn readily at higher temperatures. Therefore conductors of electric heating devices such as toasters and electric irons are made of an alloy rather than pure metal.

Hope it helpful to uh❤

Answer 2

Answer:

Conductor of electric heating devices such as toaster or electric iron is made of an alloy rather than pure metal because if electric heating devices are made up of pure metal then the metal melt easily when heat is increase and pure metal get corrode easily.