1. A current of 4 amperes flows through a wire 20 meters long and diameter of 0.5 centimeter. How many electrons pass through a given cross-sectional area of the said conductor in 2 milliseconds? Use 1.602 x 10-19 Coulomb per electron.

1. A current of 4 amperes flows through a wire 20 meters long and diameter of 0.5 centimeter. How many electrons pass through a given cross-sectional area of the said conductor in 2 milliseconds? Use 1.602 x 10-19 Coulomb per electron.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter10: Using Wire Tables And Determining Conductor Sizes

Section: Chapter Questions

Problem 10PP: Determine the ohms-per-mil-foot of an aluminum conductor located in an area with a temperature of...

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Question

Pls answer 1 and 2

Pls show the complete solution and box the final answers

(Pls round off the answers to the 4th decimal if possible)

1. A current of 4 amperes flows through a wire 20 meters long and diameter of 0.5 centimeter. How
many electrons pass through a given cross-sectional area of the said conductor in 2 milliseconds?
Use 1.602 x 10-19 Coulomb per electron.
2. A certain conductor has a free electron density of 2 x 10 30 electrons per cubic feet. Its circular cross-
sectional area is 150,000 square mils and 120 meters long. Its resistivity at 30 degrees Celsius is
0.9 x 10-8 ohm-meter. If a current of 3 A passes thru this conductor, find the drift velocity in mm per
second.

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