Coefficient 80516

An aluminum wire has a resistance of 4.25 ohms at 0 degrees. Determine its resistance at a temperature of 200 degrees Celsius.
The temperature coefficient of the electrical resistance of aluminum is 4.4·10-3K-1.

Correct answer:

R2 =  7.99 Ω

Step-by-step explanation:

t1=0 °C R1=4.25 Ω t2=200 °C α=4.4 103=0.0044 1/K  R2=R1 (1+α (t2t1))=4.25 (1+0.0044 (2000))=7.99 Ω



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