An electrical conductor designed to carry large currents has a circular cross section 2.50mm in diameter and is 14.0m long. The resistance between its ends is 0.104 Ohms.
a. What is the resistivity of the material?
b.If the electric-field magnitude in the conductor is 1.28V/m, what is the total current?
c. If the material has 8.5 x 10²⁸ free electrons per cubic meter, find the average drift velocity under the conditions in part b.