Copper has 8.5 x 1028 free electrons per cubic meter. It takes an electron 110 minutes to travel a distance of 7.10 cm through 6-gauge copper wire that is 4.12 mm in diameter. What is the electric current through the wire? (e = 1.602 x 10-19 C) 0.488 A 4.83 A 1.95 A 0.483 A 0.121 A

Copper has 8.5 x 1028 free electrons per cubic meter. It takes an electron 110 minutes to travel a distance of 7.10 cm through 6-gauge copper wire that is 4.12 mm in diameter. What is the electric current through the wire? (e = 1.602 x 10-19 C) 0.488 A 4.83 A 1.95 A 0.483 A 0.121 A

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.

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Copper has 8.5 x 1028 free electrons per cubic meter. It takes an electron 110
minutes to travel a distance of 7.10 cm through 6-gauge copper wire that is 4.12 mm
in diameter. What is the electric current through the wire? (e = 1.602 × 10-1⁹ C)
0.488 A
4.83 A
1.95 A
0.483 A
0.121 A

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