Shown below is a copper wire with the following characteristics: Diameter: 1.45 mm.00145m 1.45 × 10-8 m Number density of electrons: 8.47 x 1028 electrons/m³. Conductivity: 5.96 x 107 S/m a. Calculate the drift velocity (magnitude and direction) of the electrons in the wire when a current of 5.00 A is running through it. b. What direction is the current moving? c. Remembering that current density is a vector, calculate the magnitude and direction of the current density of this wire. d. Calculate the resistivity of the wire. e. Calculate the resistance of this wire if it were 10.0 m in length.

Shown below is a copper wire with the following characteristics: Diameter: 1.45 mm.00145m 1.45 × 10-8 m Number density of electrons: 8.47 x 1028 electrons/m³. Conductivity: 5.96 x 107 S/m a. Calculate the drift velocity (magnitude and direction) of the electrons in the wire when a current of 5.00 A is running through it. b. What direction is the current moving? c. Remembering that current density is a vector, calculate the magnitude and direction of the current density of this wire. d. Calculate the resistivity of the wire. e. Calculate the resistance of this wire if it were 10.0 m in length.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.

Question

Shown below is a copper wire with the following characteristics:
Diameter: 1.45 mm.00145m 1.45 × 10-8 m
Number density of electrons: 8.47 x 1028 electrons/m³.
Conductivity: 5.96 x 107 S/m
a. Calculate the drift velocity (magnitude and direction) of the electrons in the wire when a
current of 5.00 A is running through it.
b. What direction is the current moving?
c. Remembering that current density is a vector, calculate the magnitude and direction of the
current density of this wire.
d. Calculate the resistivity of the wire.
e. Calculate the resistance of this wire if it were 10.0 m in length.

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