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

Dear student,

The heating element of the heater 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 due to the heating effect of current. But the resistance of cord which is usually of copper or aluminium is very low so it does not glow.


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The cord of an electric heater is made up of metallic wire such as copper or aluminium which has low resistance while the heating element is made up of an alloy which has more resistance than its constituent metal also heat produce
'H' ....... H= I*IRT
10 for the same current h is directly proportional to are more heat is produced by heating element as it has more resistance and it grows
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