An iron wire has a cross-sectional area egual to 9.50 x 10-6 m2. Carry out the following steps to determine the drift speed of the conduction electrons in the wire if it carries a current of 29.0 A (a) How many kilograms are there in 1.00 mole of iron? 0.0558 v kg/mol (b) Starting with the density of iron and the result of part (a), compute the molar density of iron (the number of moles of iron per cubic meter). 7.09e-6 x mol/m3 (c) Calculate the number density of iron atoms using Avogadro's number. 1.41e-7 x atoms/m3 (d) Obtain the number density of conduction electrons given that there are two conduction electrons per iron atom. 1.69e17 x electrons/m3 (e) Calculate the drift speed of conduction electrons in this wire. 2.24 x m/s

An iron wire has a cross-sectional area egual to 9.50 x 10-6 m2. Carry out the following steps to determine the drift speed of the conduction electrons in the wire if it carries a current of 29.0 A (a) How many kilograms are there in 1.00 mole of iron? 0.0558 v kg/mol (b) Starting with the density of iron and the result of part (a), compute the molar density of iron (the number of moles of iron per cubic meter). 7.09e-6 x mol/m3 (c) Calculate the number density of iron atoms using Avogadro's number. 1.41e-7 x atoms/m3 (d) Obtain the number density of conduction electrons given that there are two conduction electrons per iron atom. 1.69e17 x electrons/m3 (e) Calculate the drift speed of conduction electrons in this wire. 2.24 x m/s

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter28: Current And Resistance

Section: Chapter Questions

Problem 68PQ

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