The filament in a light bulb has a diameter of 0.02 mm and an emissivity of 1.0. The temperature of the filament is 3x1000°C. What should be the length of the filament in meters so it will radiate 60 W of power? The Stefan-Boltzmann constant is 5.670 x 10 8 W/m2 K4. Please give your answer with 3 decimal places.

The filament in a light bulb has a diameter of 0.02 mm and an emissivity of 1.0. The temperature of the filament is 3x1000°C. What should be the length of the filament in meters so it will radiate 60 W of power? The Stefan-Boltzmann constant is 5.670 x 10 8 W/m2 K4. Please give your answer with 3 decimal places.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter28: Current And Resistance

Section: Chapter Questions

Problem 58PQ

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