Unformatted text preview: the entire structure (you can use the analysis we did in class). . a) what is the current density in each section? b) what is the voltage drop in each section? c) compare your predicted electrical resistance to the FEM’s prediction. d) compare your predicted 1-D temperature distribution to the FEM’s prediction. 3) a)Although this is a crude analysis, compare the temperature predicted for the filament with that for an actual light bulb. A light bulb filament temperature is approximately 2000ºC. At this temperature, the filament actually emits visible radiation (light) that is not considered in the current work. b) If the temperature is not high enough, use your analytical model to predict what current must be applied to reach this temperature. c) Use the same analytical model to predict the temperature of the copper at this current. Do you think that the copper will melt?...
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- Spring '08
- Incandescent light bulb, Voltage drop, 1-D temperature distribution, bulb filament temperature