Question

What is the value of the resistivity temperature coefficient of copper?

(a) 0.017 ohm per m per mm^2

(b) 0.0173 ohm per m per mm^2

(c) 0.01734 ohm per m per mm^2

(d) 0.0175 ohm per m per mm^2

I have been asked this question in homework.

This intriguing question originated from Design of Magnet Coils in section Design of Electromagnets of Design of Electrical Machines

Answer 1

Correct option is (c) 0.01734 ohm per m per mm^2

To elaborate: The resistivity temperature coefficient of copper is first calculated at a temperature of 20°C. The resistivity temperature coefficient of copper is 0.01734 ohm per m per mm^2.