Question

Estimate at what temperature copper will have the

same resistivity as tungsten does at 20oC.

[resistivity (at 20oC for tungsten is 5.6 x 10-8 Ω m

and for copper is 1.68 x 10-8 Ω m; temperature

coefficient of copper at 20 oC = 0.0068 oC
-1]​

Answer 1

Answer:

$T=363^{\circ} \mathrm{C}$