The Figure shows wire section 1 of diameter D1 = 4.00R and wire section 2 of diameter D2 = 2.00R, connected by a tapered section. The wire is copper and carries a current. Assume that the current is uniformly distributed across any cross-sectional area through the wire's width. The electric potential change V along the length L = 2.00 m shown in section 2 is 10.0 x 10-6V. The number of charge carriers per unit volume is 8.49 x 1028 m-3. What is the drift speed of the conduction electrons in section 1? D, (2) (1)

The Figure shows wire section 1 of diameter D1 = 4.00R and wire section 2 of diameter D2 = 2.00R, connected by a tapered section. The wire is copper and carries a current. Assume that the current is uniformly distributed across any cross-sectional area through the wire's width. The electric potential change V along the length L = 2.00 m shown in section 2 is 10.0 x 10-6V. The number of charge carriers per unit volume is 8.49 x 1028 m-3. What is the drift speed of the conduction electrons in section 1? D, (2) (1)

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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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

The Figure shows wire section 1 of diameter D1 = 4.00R and wire section 2 of diameter D2 = 2.00R, connected by a tapered section. The wire is copper and carries a
current. Assume that the current is uniformly distributed across any cross-sectional area through the wire's width. The electric potential change V along the length L =
2.00 m shown in section 2 is 10.0 x 10-6V. The number of charge carriers per unit volume is 8.49 x 1028 m3. What is the drift speed of the conduction electrons in
section 1?
D
D2
(2)
(1)

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