You find a long silver metal rod with a circular cross-section and you measure its cross-section diameter to be 1 mm. You set the rod up in a way that a current of 2 A passes through its cross-section. The free-electron density of silver is 5.9×1028m−3. Given this information, what is the magnitude of the drift speed of the electrons flowing in the rod?

You find a long silver metal rod with a circular cross-section and you measure its cross-section diameter to be 1 mm. You set the rod up in a way that a current of 2 A passes through its cross-section. The free-electron density of silver is 5.9×1028m−3. Given this information, what is the magnitude of the drift speed of the electrons flowing in the rod?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 31P: Consider a wire of a circular cross-section with a radius of R = 3.00mm. The magnitude of the...

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Consider a wire of a circular cross-section with a radius of R = 3.00mm. The magnitude of the currentdensity is modeled as J=cr2=5.00106Am4r2 . Whatis the current through the inner section of the wire from the center to r = 0.5R?
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