A 10 ohms Nichrome resistor is wired into an electronic circuit using copper leads (wires) of diameter 0.6 mm with a total length of 50 cm. The additional resistance is due to the copper leads is 0.03 ohms.
What change in temperature would produce a change in resistance of the Nichrome-wire equal to the resistance of the copper leads?
RCu = 0.03[1 + aCu(tC – 20)]= change in Rw = 10aw(tC – 20); solve for tC
aCu at 20 degree C= 3.9 x 10^-3
aw at 20 degree C = 4.3 x 10^-3
The Attempt at a Solution
0.03[1 + aCu(tC – 20)] = 10aw(tC – 20)
I solved for tc and got 30.6 C but it is not the right answer so please help.