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Get Answers to all your Questions
Q. 1. Why does the cord of an electric heater not glow while the heating element does?
Answers (1)
The heating element of an electric heater is a resistor.
Amount of heat production is given as , .
The resistance of elements (alloys) of an electric heater is high. As current flow through this element, it becomes hot and glows red.
The resistance of cord (metal like Cu or Al)of an electric heater is low. As current flow through this element, it does not becomes hot and does not glow red.
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