Question

A given copper wire has a resistance of 5.05 Ω at 20.0°C while a tungsten wire of the same diameter has a resistance of 4.69 Ω at 20.0°C. At what temperature will the two wires have the same resistance?

Your response differs from the correct answer by more than 10%. Double check your calculations.°C

Answer 1

For copper wire, Ru Rocel (It & cu AT] For tung sten wire, Rw = Row [1+ Pw at] The resistance of both wires is same. Race=Rw Recu (1 + de AT) = Row ((H QwAT) Thes, AT=T-200 AT = (Rocu/Rowl 20- (Rock) Kau T= 200 + (Rocu/Row)-1 Row T= 2000 + (5.05/4-6g) - 1 405x103 / - (5.05 ) (3.98 10%) T= 275.32 0 T= 275°c 4.69