Over 90 percent of the energy dissipated by an incandescent light bulb is in the form...

 

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Over 90 percent of the energy dissipated by an incandescent light bulb is in the form of heat, not light. What is the temperature of a vacuum- enclosed tungsten filament with an exposed surface area of 2.03cm² in a 100W incandescent light bulb? The emissivity of tungsten at the anticipated high temperatures is about 0.35. Note that the light bulb consumes 100W of electrical energy, and dissipates all of it by radiation (a) 1870 K (b) 2230 K (c) 2640 K (d) 3120 K (e) 2980 K Over 90 percent of the energy dissipated by an incandescent light bulb is in the form of heat, not light. What is the temperature of a vacuum- enclosed tungsten filament with an exposed surface area of 2.03cm² in a 100W incandescent light bulb? The emissivity of tungsten at the anticipated high temperatures is about 0.35. Note that the light bulb consumes 100W of electrical energy, and dissipates all of it by radiation (a) 1870 K (b) 2230 K (c) 2640 K (d) 3120 K (e) 2980 K

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21341149P AID 867 RID 529 Given data Surface area of bulb 4 203 cm 20310 m Heat ... View the full answer