Network Theory Network Elements

A certain length of wire has its resistance measured as 20 Ω at 20°C and 40 Ω at 60°C. Calculate the temperature coefficient.

1
\(\left(\frac{1}{30}\right)\,\)/°C
2
\(\left(\frac{1}{60}\right)\,\)/°C
3
30°C
4
\(\left(\frac{1}{40}\right)\,\)/°C

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