Question #74067
An incandescent lamp filament has an area 50 mm^2 and operates at a temperature of 2127^0 C. Assure that all the energy furnished to the bulb is radiated from it. If the filament acts like a blackbody. How much power must be furnished to the bulb when operating.
Expert's answer
P=σAT^4
P=(5.67∙〖10〗^(-8) )(50∙〖10〗^(-6) ) (2127)^4=58 W.
P=(5.67∙〖10〗^(-8) )(50∙〖10〗^(-6) ) (2127)^4=58 W.
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