A copper wire has a resistance of 0.420 A at 20.0°C, and an iron wire has a resistance of 0.437 A at the same temperature. At what temperature are their resistances equal? The temperature coefficient of resistivity for copper is 3.90 x 10(°C)- and for iron it is 5.00 x 10(°C)-.
A copper wire has a resistance of 0.420 A at 20.0°C, and an iron wire has a resistance of 0.437 A at the same temperature. At what temperature are their resistances equal? The temperature coefficient of resistivity for copper is 3.90 x 10(°C)- and for iron it is 5.00 x 10(°C)-.
College Physics
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ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter20: Electric Current, Resistance, And Ohm's Law
Section: Chapter Questions
Problem 12CQ: Explain why R=R0(1 + a?T) for the temperature variation of the resistance R of an object is not as...
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