Copper has approximately 10^29 free electrons per cubic meter. What is the approximate average velocity of electons in a 1.0 mm radius wire carrying 1.0A? resisivity, p of copper = 1.68 * 10^-8 ohms meter The answer in the book apparently is 2 * 10^-5 m/s. Please help by showing all your work. Your attempts will be greatly appreciated.