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Calculate the ratio of the resistance of 11.0 m of aluminum wire 2.5 mm in diameter,...

Calculate the ratio of the resistance of 11.0 m of aluminum wire 2.5 mm in diameter, to 23.0 m of copper wire 1.9 mm in diameter. The resistivity of copper is 1.68×10−8Ω⋅m and the resistivity of aluminum is 2.65×10−8Ω⋅m.

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A length of aluminum wire is connected to a precision 10.00-Vpower supply, and a current of 0.4132 A is precisely measured at 23.5 ∘C. The wire is placed in a new environment of unknown temperature where the measured current is 0.3718 A . The temperature coefficient of resistivity of aluminum is 0.00429 (∘C)−1.

What is the unknown temperature?

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