Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN: 9781133939146
Author: Katz, Debora M.
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 28, Problem 23PQ
A copper wire that is 2.00 mm in radius with density 8.94 g/cm3 has a current of 8.00 A. The molar mass of copper is 63.5463, and each copper atom contributes one free electron. What is the drift speed of the electrons in the copper wire?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A copper wire that is 2.70 mm in radius with density 8.94 g/cm3 has a current of 6.10 A. The molar mass of copper is 63.5463 g/mol, and each copper atom contributes one free electron. What is
the drift speed of the electrons in the copper wire?
Silver wire has a cross-sectional area A = 2.0 mm2. A total of 9.4 x 10 electrons pass through the wire in 3.0 s. The
conduction electron density in silver is 5.8 x 1028 electrons/m. What is the drift velocity of these electrons?
The starter motor of a car engine draws a current of 190 A from the battery. The copper wire to the motor is 6.97 mm in diameter and 1.10 m long. The starter motor runs for 0.939 s until the engine starts.178 C is the amount of charge that passes through the starter motor.
How far (in m) does an electron travel along the wire while the starter motor is on? Assume that the electron density of copper is 8.5 x1028 m-3.
Chapter 28 Solutions
Physics for Scientists and Engineers: Foundations and Connections
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...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- An aluminum wire 1.628 mm in diameter (14-gauge) carries a current of 3.00 amps, (a) What is the absolute value of the charge density in the wire? (b) What is the drift velocity of the electrons? (c) What would be the drift velocity if the same gauge copper were used instead of aluminum? The density of copper is 8.96 g/cm3 and thedensity of aluminum is 2.70 g/cm3. The molar mass ofaluminum is 26.98 g/mol and the molar mass of copper is 63.5 g/mol. Assume each atom of metal contributes one free electron.arrow_forwardTaking R = 1.00 k and = 250 V in Figure P21.49, determine the direction and magnitude of the current in the horizontal wire between a and e. Figure P21.49arrow_forwardTwo concentric, metal spherical shells of radii a = 4.0 cm and b = 8.0 cm are separated by aluminum as shown in Figure P28.33. The inner sphere has a total charge Q at any time. If the two spheres are maintained at a potential difference of 2.0 V via an external source, calculate the current from one sphere to the other.arrow_forward
- A copper wire has a cross-sectional area of 3.31× 10-6m². It carries a cOnstant current of 10.0 A. What is the drift speed of the electrons in the wire? (Assume each copper atom contributes one free electron to the current.) The density of copper is e = 8.92 g /cm³. The molar mass of copper is M = 65.3 g / mol. Aarrow_forwardA strip of doped silicon 260.0 um wide contains 8.80 x 10-2 conduction electrons per cubic meter and an insignificant number of holes. When the strip carries a current of 102 µA, the drift speed of the electrons is 59.6 cm/s. What is the thickness of the strip? Umarrow_forwardCopper contains 8.4×1028 free electrons/m3. A copper wire of cross-sectional area 7.4×10-7 m² carries a current of 1 A. The electron drift speed is approximately: 10-23 m/s 103 m/s 1 m/s 3 x 108 m/s 10-4 m/sarrow_forward
- A conductor has a cross-sectional area of 2.3×10 6 m² and the number of free electrons per unit volume is 8.5x 1028 electron/m³. When the current is 10.5 A, find the drift speed (in mm/s) of the electrons. Use the charge of the electron to be 1.6x 10-19 C. Select one: O A. 0.34 O B. 44.07 OC. 0.44 OD. 0.23 OE. 33.57 Next pagearrow_forwardThe starter motor of a car engine draws a current of 190 A from the battery. The copper wire to the motor is 6.97 mm in diameter and 1.10 m long. The starter motor runs for 0.939 s until the engine starts. How much charge (in C) passes through the starter motor? 178C is the correct answer. How far (in m) does an electron travel along the wire while the starter motor is on? Assume that the electron density of copper is 8.5 x1028 m-3.arrow_forwardA current of 2 A flows through a gold wire with a radius of 3 cm and a length of 15 m. There are 3.50x1020 free electrons/m3 in gold. What is the magnitude of the drift velocity of the free electrons in the wire? -2 т O 1.783x10 -2 т 5.350x10 S О 12.609 т 50.455 marrow_forward
- You've been asked to determine whether a new material your company has made is ohmic and, if so, to measure its electrical conductivity. Taking a 0.50 mm X 1.0 mm x 45 mm sample, you wire the ends of the long axis to a power supply and then measure the current for several different potential differences. Your data are as follows: Voltage AV (V) Current I (A) 0.200 0.47 0.400 1.06 0.600 1.53 0.800 1.97 Part A You want to determine if the material is ohmic and its conductivity o by graphing the data. Select the appropriate variables to graph on each axis that will produce a straight-line graph with a slope and intercept that will allow you to determine these properties. Sort all variables into the appropriate bins. Horizontal axis Submit 1 AV Request Answer (AV)² Vertical axis AV I Not used Reset Helparrow_forwardA conductor has a cross-sectional area of 2.3x106 m² and the number of free electrons per unit volume is 8.5 X1028 electron/m³. When the current is 6.4 A, find the drift speed (in mm/s) of the electrons. Use the charge of the electron to be 1.6×10-19 c. Select one: A. 0.20 B. 26.86 C. 0.14 D. 20.46 E. 0.27arrow_forwardCopper has 8.5×1028 electrons per cubic meter. How many electrons are there in a 50.0 cm length of 12-gauge copper wire (diameter 2.05 mm)? If a current of 2.10 A is flowing in the wire, what is the average drift speed of the electrons along the wire? (There are 6.24×1018 electrons in 1 coulomb of charge.)arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage LearningPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and Engineers with Modern ...PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Physics for Scientists and Engineers with Modern ...
Physics
ISBN:9781337553292
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Circuits, Voltage, Resistance, Current - Physics 101 / AP Physics Review with Dianna Cowern; Author: Physics Girl;https://www.youtube.com/watch?v=q8X2gcPVwO0;License: Standard YouTube License, CC-BY