A 20 m long copper wire has electron density n = 8.50 x 1028 m-3 and cross-sectional area A = 4.00 x 10-6 m². Acurrent I 6.00 A runs through the wire. Which one of the following is the current density [Select]the wire?A. 2.00 x 106 A/m²2B. 1.50 x 106 A/m²2C. 3.00 x 106 A/m²D. 4.00 x 100 A/m²E. 6.00 × 106 A/m²The resistivity of Copper is p = 1.72 x 10-8 2. m. What is the electric field [Select]Which one of the following is the electron drift speed [Select]A. 0.505 m/sB. 0.0482 m/sc. 1.10 x 10-4 m/sD. 2.35 x 10-4 m/sE. 0.0216 m/sWhat is the resistance [Select]of the wire?in the wire?in the wire?✓in

Length, L = 20 m Electron density, n = 8.50×1028 /m³ Area, A = 4×10-6 m² Current, I = 6 A

A 20 m long copper wire has electron density n = 8.50 x 1028 m-3 and cross-sectional area A = 4.00 x 10-6 m². A current I = 6.00 A runs through the wire. Which one of the following is the current density [Select] the wire? A. 2.00 x 106 A/m² B. 1.50 x 106 A/m² C. 3.00 x 100 A/m² D. 4.00 x 106 A/m² E. 6.00 x 100 A/m² The resistivity of Copper is p = 1.72 x 10-8 2. m. What is the electric field [Select] Which one of the following is the electron drift speed [Select] A. 0.505 m/s B. 0.0482 m/s -4 c. 1.10 x 10 m/s D. 2.35 x 104 m/s in the wire? in the wire? in

A 20 m long copper wire has electron density n = 8.50 x 1028 m-3 and cross-sectional area A = 4.00 x 10-6 m². A current I = 6.00 A runs through the wire. Which one of the following is the current density [Select] the wire? A. 2.00 x 106 A/m² B. 1.50 x 106 A/m² C. 3.00 x 100 A/m² D. 4.00 x 106 A/m² E. 6.00 x 100 A/m² The resistivity of Copper is p = 1.72 x 10-8 2. m. What is the electric field [Select] Which one of the following is the electron drift speed [Select] A. 0.505 m/s B. 0.0482 m/s -4 c. 1.10 x 10 m/s D. 2.35 x 104 m/s in the wire? in the wire? in

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 55P: A 20.00-V battery is used to supply current to a 10-k resistor. Assume the voltage drop across any...

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