A tungsten wire has a resistance of 4.00 2 at 11.0°C. Determine its resistance (in 2) at 411°C. The temperature coefficient of resistivity for tungsten wire is 4.50 x 10 (°C). (Assume that the temperature coefficient of resistivity was measured using the reference temperature 20°C.) 11.2 We are interested in two cases. For case 1, we know the resistance at some temperature and for case 2 we wish to determine the resistance at some other temperature. Write an expression for the resistance as a function of the temperature for each case and eliminate R. between the two expressions in order to determine the resistance for case 2.0
A tungsten wire has a resistance of 4.00 2 at 11.0°C. Determine its resistance (in 2) at 411°C. The temperature coefficient of resistivity for tungsten wire is 4.50 x 10 (°C). (Assume that the temperature coefficient of resistivity was measured using the reference temperature 20°C.) 11.2 We are interested in two cases. For case 1, we know the resistance at some temperature and for case 2 we wish to determine the resistance at some other temperature. Write an expression for the resistance as a function of the temperature for each case and eliminate R. between the two expressions in order to determine the resistance for case 2.0
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Transcribed Image Text:A tungsten wire has a resistance of 4.00 at 11.0°C. Determine its resistance (in ) at 411°C. The temperature coefficient of resistivity for tungsten wire is 4.50 × 10-3 (°C)¯¹. (Assume that the
temperature coefficient of resistivity was measured using the reference temperature 20°C.)
11.2
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We are interested in two cases. For case 1, we know the resistance at some temperature and for case 2 we wish to determine the resistance at some other temperature. Write an expression for the
resistance as a function of the temperature for each case and eliminate Ro between the two expressions in order to determine the resistance for case 2.
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