PUMPA - SMART LEARNING

எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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Why does the cord of an electric heater not glow while the heating element does?
 
The heating element of an electric heater is made of a . When a large amount of is passed through the heating element, it reaches a and becomes hot. This makes the heating element glow red.
 
The cord of an electric heater is usually made of . These materials have , and hence, the cord does not glow.