Question

what will happen if we replace tungsten filament of electric bulb with copper wires​

Answer 1

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Copper wire cannot be used to create an electrical bulb filament, because copper wire has very low resistance. Therefore, the light does not shine until the current is removed. It will also melt-the filament must be white-hot for any application.

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Answer 2

Answer: Copper's melting point is lower than tungsten and at high temperature the copper will melt. Resistivity of tungsten is higher than copper. If we use a thick tungsten wire in the electric bulb , then the resistance will get reduced and to achieve the requisite heat, more energy will be spent.