A coil of Nichrome wire is 29.0 m long. The wire has a diameter of 0.460 mm and is at 20.0°C. (a) If it carries a current of 0.460 A, what is the magnitude of the electric field in the wire? (b) If it carries a current of 0.460 A, what is the power delivered to it?

A coil of Nichrome wire is 29.0 m long. The wire has a diameter of 0.460 mm and is at 20.0°C. (a) If it carries a current of 0.460 A, what is the magnitude of the electric field in the wire? (b) If it carries a current of 0.460 A, what is the power delivered to it?

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 17P

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Concept explainers

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.

Question

A coil of Nichrome wire is 29.0 m long. The wire has a diameter of
0.460 mm and is at 20.0°C.
(a) If it carries a current of 0.460 A, what is the magnitude of the
electric field in the wire?
(b) If it carries a current of 0.460 A, what is the power delivered to it?

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