The tungsten filament of a light bulb has an operating temperature of about 2 100 K.If the emitting area of the filament is 1.0 cm²,and its emissivity is 0.68,what is the power output of the light bulb? (s = 5.67 ´ 10^-8 W/m²*K⁴) A)100 W B)75 W C)60 W D)40 W

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The Answer of The tungsten filament of a light bulb has an operating temperature of about 2 100 K.If the emitting area of the filament is 1.0 cm²,and its emissivity is 0.68,what is the power output of the light bulb? (s = 5.67 ´ 10^-8 W/m²*K⁴) A)100 W B)75 W C)60 W D)40 W

The Tungsten Filament of a Light Bulb Has an Operating