why is copper wire not used to muke filament in electric bulb nowadays?
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copper has low resistance and i dont think it was ever used as a fliament
filaments are made from conductors with high resistance like tungsten which is used now a days resisting electricity causes the conductor to becom red which emmits light and heat...
copper is used in a normal wire only becsuse it has low resistance..
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filaments are made from conductors with high resistance like tungsten which is used now a days resisting electricity causes the conductor to becom red which emmits light and heat...
copper is used in a normal wire only becsuse it has low resistance..
if u like my answer pls thank me comment and follow me...
my request
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IN BULB , THE ELECTRICAL ENERGY GETS CONVERTED INTO HEAT ENERGY AND THEN TO LIGHT ENERGY. THE MAIN WORK OF THE BULB IS TO PRODUCE HEAT SO THAT HEAT GETS CONVERTED TO LIGHT ENERGY. SO FOR EMITTING HEAT THE MATERIAL OF THE FILAMENT SHOULD HAVE A HIGH MELTING POINT AND TUNGSTEN IS USED. NOW THE FINAL POINT IS THAT COPPER HAS A MELTING POINT OF 1358 K(KELVIN) WHEREAS THE MELTING POINT OF TUNGSTEN IS 3695 K. SINCE TUNGSTEN HAS A HIGHER MELTING POINT IT IS USED OVER COPPER.
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