Q2Silver wire with cross section area 0.923mm2 , the resistivity 10.49g/cm³ and the molar mass M=107.9g/mol, if the current pass though the wire is 0.123mA, calculate : 1.The electron density 2.The current density (j=133.26A/m2) 3.Drift speed (va=1.42*10* m/s) (n=5.855*1028 e/m³)

Q2Silver wire with cross section area 0.923mm2 , the resistivity 10.49g/cm³ and the molar mass M=107.9g/mol, if the current pass though the wire is 0.123mA, calculate : 1.The electron density 2.The current density (j=133.26A/m2) 3.Drift speed (va=1.4210 m/s) (n=5.855*1028 e/m³)

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter30: Magnetic Fields And Forces

Section30.3: Ørsted’s Discovery

Problem 30.2CE

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Question

Q2Silver wire with cross section area 0.923mm2
the resistivity = 10.49g/cm³ and the molar mass
M=107.9g/mol, if the current pass though the
wire is 0.123mA, calculate :
1.The electron density
2.The current density
3.Drift speed (va=1.42*108 m/s)
(n=5.855*1028 e/m³)
(j=133.26A/m?)

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