An incandescent lamp filament has an area of 50 mm2 and operates at a temperature of 2,127°C. If all the energy furnished to the bulb is assumed to be radiated from it and the filament's emissivity if 0.83, by how much power must be furnished to the bulb when it is operating?

An incandescent lamp filament has an area of 50 mm2 and operates at a temperature of 2,127°C. If all the energy furnished to the bulb is assumed to be radiated from it and the filament's emissivity if 0.83, by how much power must be furnished to the bulb when it is operating?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter1: Temperature And Heat

Section: Chapter Questions

Problem 121AP: An infrared heater for a sauna has a surface area of 0.050 m2 and an emissivity of 0.84. What...

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Question

An incandescent lamp filament
has an area of 50 mm² and
operates at a temperature
of 2,127°C. If all the energy
furnished to the bulb is assumed
to be radiated from it and the
filament's emissivity if 0.83,
by how much power must be
furnished to the bulb when it is
operating?

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