A conducting wire of radius 1 mm is carrying a uniformly distributed current of 50 A. If the electron density in this wire is 8.1 x 1028 electrons/m³, (a) What is the average drift velocity of the electrons? (b) What is the electric field intensity in the wire? [The resistivity of the wire is 1.81 x 10-8.] (c) If the wire is 50 km long, what is the potential difference between its ends? (d) What is the resistance of the wire?

A conducting wire of radius 1 mm is carrying a uniformly distributed current of 50 A. If the electron density in this wire is 8.1 x 1028 electrons/m³, (a) What is the average drift velocity of the electrons? (b) What is the electric field intensity in the wire? [The resistivity of the wire is 1.81 x 10-8.] (c) If the wire is 50 km long, what is the potential difference between its ends? (d) What is the resistance of the wire?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 28P: An aluminum wire 1.628 mm in diameter (14-gauge) carries a current of 3.00 amps, (a) What is the...

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