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

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

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter27: Current And Resistance

Section: Chapter Questions

Problem 27.37P: In a hydroelectric installation, a turbine delivers 1500 hp to a generator, which in turn transfers...

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Question

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

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