Q49: A coil of Nichrome wire is m long. The wire has a diameter of mm and is at C. If it carries a current of A, what are
(a) the magnitude of the electric field in the wire and
(b) the power delivered to it?
(c) What If? If the temperature is increased to C and the potential difference across the wire remains constant, what is the power delivered?
GIVEN DATA
ρ₀(resistivity of Nichrome at t₀) =
α(temperature coefficient of resistivity for aluminum)=