You are building your own resistor out of a common heating element material, Nichrome (ρ = 1x10-6 Ω. m at 20o C,a = 0.4x10-3K-1). You have a length of thin Nichrome wire (cylindrical) with a diameter of 0.1 mm.
a) What length of wire is required to create a 10 Ω resistor at room temperature?
b) What length of wire is required to create a 10 Ω resistor at 600 oC?