1E E 2315Lecture 03‐SimpleResistive Circuits andApplicationsCalculating ResistanceWhen conductor has uniformcross-sectionRAl61.67 10cucm62.70 10alcmArea,AlenTemperature Coefficient of ResistanceMetallic conductors have a linear increase of resistance with increased temperature.Tois the reference temperature (usually 20oC) and Rois the ()1ooR TRTTresistance at the reference temperature. is the temperaturecoefficient of resistance for the material. At 20oC, some values for are:MaterialAlpha @ 20oCAluminum0.004308Copper0.004041
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