Bundle: Physics For Scientists And Engineers: Foundations And Connections, Volume 1, Loose-leaf Version + Webassign Printed Access Card For Katz's ... And Connections, Single-term Courses
1st Edition
ISBN: 9781337759359
Author: Debora M. Katz
Publisher: Cengage Learning
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Chapter 28, Problem 21PQ
To determine
The current and current density in region 2.
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A current of I = 4.6 A is passing through a conductor with cross sectional area A = 3.5 × 10-4 m2. The charge carriers in the conductor, electrons, have a number density n = 1.2 x 1027 m-3.
Part (a) Express the drift velocity of electrons through I, A, n, and the fundamental charge e.
Part (b) Calculate the numerical value of v, in m/s.
The vector current density of a 3-meter-long and 3mm diameter conductor is given as 155630 A/m2. Determine the current on the conductor, its free electron density, the drift velocity of the charges and the number of electrons passing through the conductor for 3 seconds.
The radii of the two concentric conductive spheres are r1 and r2>r1. The resistivity of the material between the spheres is p.
If the total current I from the inner sphere to the outer sphere is I, find the current density J at the point r (vectoral position) in the material between them.
Give your answer in terms of (r1, r2, r, p, I).
Chapter 28 Solutions
Bundle: Physics For Scientists And Engineers: Foundations And Connections, Volume 1, Loose-leaf Version + Webassign Printed Access Card For Katz's ... And Connections, Single-term Courses
Ch. 28.1 - Prob. 28.1CECh. 28.2 - Prob. 28.2CECh. 28.3 - Prob. 28.3CECh. 28.5 - When a lightbulb burns out, its filament breaks so...Ch. 28.6 - A battery with terminal potential is connected to...Ch. 28.7 - A battery of terminal potential is connected to a...Ch. 28 - Prob. 1PQCh. 28 - Prob. 2PQCh. 28 - Prob. 3PQCh. 28 - Prob. 4PQ
Ch. 28 - Prob. 5PQCh. 28 - Prob. 6PQCh. 28 - Prob. 7PQCh. 28 - Prob. 8PQCh. 28 - Prob. 9PQCh. 28 - Prob. 10PQCh. 28 - Prob. 11PQCh. 28 - Prob. 12PQCh. 28 - Prob. 13PQCh. 28 - Prob. 14PQCh. 28 - The current in a wire varies with time (measured...Ch. 28 - Prob. 16PQCh. 28 - The amount of charge that flows through a copper...Ch. 28 - Prob. 18PQCh. 28 - Prob. 19PQCh. 28 - Prob. 20PQCh. 28 - Prob. 21PQCh. 28 - Prob. 22PQCh. 28 - A copper wire that is 2.00 mm in radius with...Ch. 28 - Prob. 24PQCh. 28 - Prob. 25PQCh. 28 - Prob. 26PQCh. 28 - What is the electric field in an aluminum wire if...Ch. 28 - Prob. 28PQCh. 28 - Prob. 29PQCh. 28 - Prob. 30PQCh. 28 - Prob. 31PQCh. 28 - Prob. 32PQCh. 28 - Two concentric, metal spherical shells of radii a...Ch. 28 - Prob. 34PQCh. 28 - Prob. 35PQCh. 28 - Prob. 36PQCh. 28 - Prob. 37PQCh. 28 - A lightbulb is connected to a variable power...Ch. 28 - Prob. 39PQCh. 28 - Prob. 40PQCh. 28 - Prob. 41PQCh. 28 - Prob. 42PQCh. 28 - Prob. 43PQCh. 28 - A Two wires with different resistivities, 1 and 2,...Ch. 28 - A copper and a gold wire are supposed to have the...Ch. 28 - Gold bricks are formed with the dimensions 7358134...Ch. 28 - Prob. 47PQCh. 28 - Prob. 48PQCh. 28 - Prob. 49PQCh. 28 - Prob. 50PQCh. 28 - Prob. 51PQCh. 28 - Prob. 52PQCh. 28 - Prob. 53PQCh. 28 - Prob. 54PQCh. 28 - A two-slice bread toaster consumes 850.0 W of...Ch. 28 - Prob. 56PQCh. 28 - Prob. 57PQCh. 28 - Prob. 58PQCh. 28 - Prob. 59PQCh. 28 - Prob. 60PQCh. 28 - Prob. 61PQCh. 28 - Prob. 62PQCh. 28 - Prob. 63PQCh. 28 - Prob. 64PQCh. 28 - Prob. 65PQCh. 28 - Prob. 66PQCh. 28 - Prob. 67PQCh. 28 - Prob. 68PQCh. 28 - Prob. 69PQCh. 28 - Prob. 70PQCh. 28 - Prob. 71PQCh. 28 - Prob. 72PQCh. 28 - Prob. 73PQCh. 28 - Prob. 74PQCh. 28 - Review When a metal rod is heated, its resistance...Ch. 28 - Prob. 76PQCh. 28 - Prob. 77PQCh. 28 - Prob. 78PQCh. 28 - Prob. 79PQCh. 28 - Prob. 80PQCh. 28 - Prob. 81PQCh. 28 - A conducting material with resistivity is shaped...
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- Q7.(Page No.369, 18.9 Exercises, Problem No.3). The resistivity of a sample of germanium is 60x 102 Im. A cylinder of germanium 50mm long and 0.50 mm in radius has a p.d. of 10 v applied across its ends. (a) What current passes through the specimen? (b) What is the current density (1/A) in the sample?arrow_forwardProblem 1. A copper wire of cross-sectional area 2.5 mm2carries a current with a current density of2.60 A/mm2. The density of free electrons for copper is 9.5x1028 electrons per cubic meter. Theresistivity of copper is 1.68x10−8 ·m. The charge of the electron is 1.6x10−19 C.(a) Calculate the current in the wire.(b) The magnitude of the drift velocity of electrons in the wire.(c) Find the electric field inside the wire.arrow_forwardA copper wire has a square cross section 2.3mm on a side. The wire is 4m long and carries a current of 3.6 A. The density of the free electrons is n = 8.5 * 1029 m-3. The resistivity of Copper is 1.7 * 10-8 ohmmeter. What is the current density and the electric field inside the wire?arrow_forward
- A current of I=1.1 A is passing through a conductor with cross-section area A=6.5x10^-4m^2. The charge carries in the conductor, electrons, have a number density n=6.1x10^27m^-3. Part (a) Express the drift velocity of electrons through I,A,n and the fundamental charge e. Part (b) calculate the miracle value of v, in m/s. arrow_forwardAn 18 gauge copper wire (diameter 1.02 mm) carries a current with a current density of 2.30 x 10° A/m. The density of free electrons for copper is 8.5 x 10 electrons per cubic meter. Part A Calculate the current in the wire. Express your answer with the appropriate units. I= 1,88 A Prevlous Answers v Correct Part B Calculate the magnitude of the drift velocity of electrons in the wire. Express your answer with the appropriate units. ymbols undo redo keyboard shortcuts Help va = 2.30 • 10° Submit Prevlous Answers Request Anawer Provide Feedback O Type here to search 99+ hp 12 13 米 14 IOI t5 esc 24 & 4 8.arrow_forwardA current of 0.123 mA flows in a silver wire whose cross-sectional area is 0.923 mm2. The density of electrons in the wire, assuming there is a conducting electron a. per silver atom is:____x10^28 electrons/m3.b.The current density in the wire, assuming that the current is uniform is:____ A/m^2.c.The drift speed of the electrons is:_____x10^-8 m/s.arrow_forward
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