A coil of Nichrome wire is 20.0 m long. The wire has a diameter of 0.340 mm and is at 20.0°C.
1) If it carries a current of 0.500 A, what is the magnitude of the electric field in the wire?
V/m
2) If it carries a current of 0.500 A, what is the power delivered to it?
W
3) If the temperature is increased to 320°C and the potential dissimilarity across the wire remains constant, what is the power delivered?