Nichrome is a nickel chromium allot commonly used in heating elements. suppose you have a coil of nichrome wire that is 25.0 m long and the wire has a diameter of 0.400 mm and is at 20 degrees C. ( the resistivity of Nichrome is 1.50*10^-8 Omega*m and the temprature coefficient of resistivity is 0.4*10^-3 Degrees C^-1)
a) what is the resistance of the Nichrome at 20.0 Degrees C?
b) If the wire carries a current of 0.500 A, what is the power delivered to the wire?
c) If the temprature is increased to 340 Degrees C, what is the resistance of the Nichrome wire?