An electrical conductor designed to carry large currents has a circular cross section 2.5mm in diameter and is 14m long. The resistance between its ends is 0.14Ω. (a) what is the resistivity of the material? (b) if the electric field magnitude in the conductor is1.28 V/m, what is the total current? (c) if the material has 8.5x1028 free electrons per cubic meter, find the average drift speed under the conditions of part (b).

An electrical conductor designed to carry large currents has a circular cross section 2.5mm in diameter and is 14m long. The resistance between its ends is 0.14Ω. (a) what is the resistivity of the material? (b) if the electric field magnitude in the conductor is1.28 V/m, what is the total current? (c) if the material has 8.5x1028 free electrons per cubic meter, find the average drift speed under the conditions of part (b).

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 31P: Consider a wire of a circular cross-section with a radius of R = 3.00mm. The magnitude of the...

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