An 18-gauge copper wire (p = 1.72x10n.m) has a diameter of 1.02 mm and a cross- sectional area of 8.20x10'm?. It carries a current of 1.67 A. Find (a) the electric-field magnitude in the wire; (b) the potential difference between two points in the wire 50m apart: (c) the resistance of a 50m length of this wire.

An 18-gauge copper wire (p = 1.72x10n.m) has a diameter of 1.02 mm and a cross- sectional area of 8.20x10'm?. It carries a current of 1.67 A. Find (a) the electric-field magnitude in the wire; (b) the potential difference between two points in the wire 50m apart: (c) the resistance of a 50m length of this wire.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter21: Current And Direct Current Circuits

Section: Chapter Questions

Problem 8P: A 0.900-V potential difference is maintained across a 1.50-m length of tungsten wire that has a...

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