College Physics 10th Edition by Raymond Serway,Chris Vuille

Exercise 65

A length of aluminum wire has a resistance of 30.0 at 20.0°C. When the wire is warmed in an oven and reaches thermal equilibrium, the resistance of the wire increases to 46.2 . (a) Neglecting thermal expansion, find the temperature of the oven. (b) Qualitatively, how would thermal expansion be expected to affect the answer