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Question

If nichrome has the heating effects of current then why is it not used in bulb as the filament?



 


Solution

Nichrome wire, an alloy of nickel and chromium, and often iron (or other elements) is good for making heaters but not lamps.

At rated voltages, nichrome will glow orange-red, not the bright white that is needed for illumination. If you increase the voltage to get a brighter color, the nichrome will burn open (melt.) 
So it cannot be used in lambs.

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