A silver wire 2.6 mm in diameter transfers a charge of 420 C in 80 min. Silver contains 5.8 x 1028 free electrons per cubic meter. a. What is the current in the wire? b. What is the magnitude of the drift velocity of the electrons in the wire? Answers:a. 8.75x10-²A b. 1.78x10-6m/s

A silver wire 2.6 mm in diameter transfers a charge of 420 C in 80 min. Silver contains 5.8 x 1028 free electrons per cubic meter. a. What is the current in the wire? b. What is the magnitude of the drift velocity of the electrons in the wire? Answers:a. 8.75x10-²A b. 1.78x10-6m/s

Physics for Scientists and Engineers with Modern Physics

10th Edition

ISBN:9781337553292

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter26: Current And Resistance

Section: Chapter Questions

Problem 6P: Figure P26.6 represents a section of a conductor of nonuniform diameter carrying a current of I =...

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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 silver wire 2.6 mm in diameter transfers a charge of 420 C in 80 min. Silver contains
5.8 x 1028 free electrons per cubic meter.
a. What is the current in the wire?
b. What is the magnitude of the drift velocity of the electrons in the wire?
Answers:a. 8.75x10-²A b. 1.78x10-6m/s

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