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A coil of Nichrome wire is 31.0 m long. The wire has a diameter of 0.430...

A coil of Nichrome wire is 31.0 m long. The wire has a diameter of 0.430 mm and is at 20.0°C.

(a) If it carries a current of 0.500 A, what is the magnitude of the electric field in the wire?
V/m
(b) If it carries a current of 0.500 A, what is the power delivered to it?
W
(c) If the temperature is increased to 400°C and the potential difference across the wire remains constant, what is the power delivered?
W

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