# A copper wire has a circular cross section with a radius of 1.25 mm. (a) If the wire carries a current of 3.70 A, find the drift speed of electrons in the wire. (Take the density of mobile charge carriers in copper to be n = 1.10 × 10 29 electrons/m 3 .) (b) For the same wire size and current, find the drift speed of electrons if the wire is made of aluminum with n = 2.11 × 10 29 electrons/m 3 .

### College Physics

11th Edition
Raymond A. Serway + 1 other
Publisher: Cengage Learning
ISBN: 9781305952300

### College Physics

11th Edition
Raymond A. Serway + 1 other
Publisher: Cengage Learning
ISBN: 9781305952300

#### Solutions

Chapter
Section
Chapter 17, Problem 2P
Textbook Problem

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