Question

Why does the cord of an electric heater not glow while the heating element does ?

Answer 1

heya!!


Ur answer goes like this :-

=> Heating element has higher resistance than that of cord of an electric heater.

We know,

=> Resistance is directly proportional to temperature.

=> It meant that more the resistance is,more is the temperature.

R∝T

=> Now,since ,resistance of heating element is higher than that of a cord,temperature will be more at heating element.

=> In other words,more heat will be generated there.Ultimately,it will glow.

Thanks for this wonderful question buddy.

Regards

@EVERkshitijEST

Answer 2

$\bf\colorbox{green}{Answer:-}$

The heater's heating element is made up of an alloy that has very high resistance, so when current flows through the heating element, it becomes too hot and glows red. But the cord's resistance, which is usually of copper or aluminium, is low, so it does not glow.