FUNDAMENTALS OF PHYSICS - EXTENDED
12th Edition
ISBN: 9781119773511
Author: Halliday
Publisher: WILEY
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 26, Problem 11P
What is the current in a wire of radius R = 3.40 mm if the magnitude of the current density is given by (a) Ja = J0r/R and (b) Jb = J0(1−r/R), in which r is the radial distance and J0 = 5.50 × 104 A/m2? (c) Which function maximizes the current density near the wire’s surface?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
What is the current in a wire of radius R = 3.08 mm if the magnitude of the current density is given by (a) Ja = Jor/R and (b) J = Jo(1-r/R)
in which r is the radial distance and Jo = 3.50 x 104 A/m²? (c) Which function maximizes the current
density near the wire's surface?
(a) Number i
(b) Number i
Units
Units
What is the current in a wire of radius R = 2.08 mm if the magnitude of the current density is given by (a) Ja = Jor/R and (b) Jp = Jo(1 -
r/R) in which r is the radial distance and Jo = 8.05 × 104 A/m2? (c) Which function maximizes the current
density near the wire's surface?
(a) Number
i
Units
(b) Number
i
Units
(c)
A wire has a radius of 2.5 m. The current density carried by the wire is a function of distance from the center of the wire is given by J(r) = C exp(-r2/L2) (A/m2), where C = 7.6 A/m2, and L = 2.7 m. Calculate the total amount of current carried by the wire, in A.
(Please answer to the fourth decimal place - i.e 14.3225)
Chapter 26 Solutions
FUNDAMENTALS OF PHYSICS - EXTENDED
Ch. 26 - The following table give the lengths of three...Ch. 26 - Three wires, of the same diameter, are connected...Ch. 26 - During the 4.0 min a 5.0 A current is set up in a...Ch. 26 - An isolated conducting sphere has a 10 cm radius....Ch. 26 - A charged belt, 50 cm wide, travels at 30 m/s...Ch. 26 - The United States National Electric Code, which...Ch. 26 - SSM WWW A beam contains 2.0 108 doubly charged...Ch. 26 - A fuse in an electric circuit is a wire that is...Ch. 26 - Prob. 8PCh. 26 - The magnitude Jr of the current density in a...
Ch. 26 - The magnitude J of the current density in a...Ch. 26 - What is the current in a wire of radius R = 3.40...Ch. 26 - Near Earth, the density of protons in the solar...Ch. 26 - Prob. 13PCh. 26 - A human being can be electrocuted if a current as...Ch. 26 - SSM A coil is formed by winding 250 turns of...Ch. 26 - Copper and aluminium are being considered for a...Ch. 26 - Prob. 17PCh. 26 - SSM What is the resistivity of a wire of 1.0 mm...Ch. 26 - Prob. 20PCh. 26 - ILW A common flashlight bulb is rated at 0.30 A...Ch. 26 - Kiting during a storm. The legend that Benjamin...Ch. 26 - Prob. 23PCh. 26 - SSM ILW A wire with a resistance of 6.0 is drawn...Ch. 26 - SSM WWW Two conductors are made of the same...Ch. 26 - Prob. 29PCh. 26 - Prob. 30PCh. 26 - Prob. 31PCh. 26 - Prob. 33PCh. 26 - A certain brand of hot-dog cooker works by...Ch. 26 - Thermal energy is produced in a resistor at a rate...Ch. 26 - SSM A 1220 V potential difference is applied to a...Ch. 26 - ILW An unknown resistor is connected between the...Ch. 26 - A student kept his 6.0 V, 7.0 W radio turned on at...Ch. 26 - SSM ILW A 1250 W radiant heater is constructed to...Ch. 26 - A copper wire of cross-sectional area 2.00 106 m2...Ch. 26 - A heating element is made by maintaining a...Ch. 26 - Exploding shoes. The rain-soaked shoes of a person...Ch. 26 - A 100 W lightbulb is plugged into a standard 120 V...Ch. 26 - GO The current-density magnitude in a certain...Ch. 26 - A 120 V potential difference is applied to a space...Ch. 26 - SSM A Nichrome heater dissipates 500 W when the...Ch. 26 - Prob. 56PCh. 26 - An 18.0 W device has 9.00 V across it. How much...Ch. 26 - An aluminum rod with a square cross section is 1.3...Ch. 26 - A cylindrical metal rod is 1.60 m long and 5.50 mm...Ch. 26 - The chocolate crumb mystery. This story begins...Ch. 26 - SSM A steady beam of alpha particles q = 2e...Ch. 26 - A resistor with a potential difference of 200 V...Ch. 26 - A 2.0 kW heater element from a dryer has a length...Ch. 26 - cylindrical resistor of radius 5.0 mm and length...Ch. 26 - A potential difference V is applied to a wire of...Ch. 26 - The headlights of a moving car require about 10 A...Ch. 26 - A 500 W heating unit is designed to operate with...Ch. 26 - How much electrical energy is transferred to...Ch. 26 - A caterpillar of length 4.0 cm crawls in the...Ch. 26 - A steel trolley-car rail has a cross-sectional...Ch. 26 - A coil of current-carrying Nichrome wire is...Ch. 26 - Prob. 74PCh. 26 - A certain x-ray tube operates at a current of 7.00...Ch. 26 - A current is established in a gas discharge tube...
Additional Science Textbook Solutions
Find more solutions based on key concepts
5.88 CP Losing Cargo. A 12.0-kg box rests on the level bed of a truck. The coefficients of friction between the...
University Physics (14th Edition)
When released, a 100-g block slides down the path shown below, reaching the bottom with a speed of 4.0 m/s. How...
University Physics Volume 1
Whether the person would prefer to be paid according to the clock at Spacely Sprockets Universal Headquarters o...
Physics (5th Edition)
If two nuclei are to fuse in a nuclear reaction, they must be moving fast enough so that the repulsive Coulomb ...
University Physics Volume 3
The minimum wattage that the heater must have.
Physics: Principles with Applications
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_forwardConsider a wire of a circular cross-section with a radius of R = 3.00mm. The magnitude of the currentdensity is modeled as J=cr2=5.00106Am4r2 . Whatis the current through the inner section of the wire from the center to r = 0.5R?arrow_forwardWhat is the current in a wire of radius R = 4.48 mm if the magnitude of the current density is given by (a) Ja = J0r/R and (b) Jb = J0(1 - r/R) in which r is the radial distance and J0 = 7.93 × 104 A/m2? (c) Which function maximizes the currentdensity near the wire’s surface?arrow_forward
- What is the current in a wire of radius R = 2.83 mm if the magnitude of the current density is given by (a) J, - Jor/R and (b) J, = Jo(1-r/R) in which r is the radial distance and Jo = 7.58 x 104 A/m2? (c) Which function maximizes the current density near the wire's surface? (a) Number i Units (b) Number i Units (c)arrow_forwardWhat is the current in a wire of radius R = 2.01 mm if the magnitude of the current density is given by (a) Ja = Jor/R and (b) Jb = Jo(1 - r/R) in which ris the radial distance and Jo = 6.22 x 104 A/m2? (c) Which function maximizes the current density near the wire's surface? (a) Number Units (b) Number Units (c)arrow_forwardThe magnitude J of the current density in a certain wire with a circular cross section of radius R = 2.30 mm is given by J = (3.08 × 10')r², with J in amperes per square meter and radial distance r in meters. What is the current through the outer section bounded by r = 0.915R and r = R?arrow_forward
- Please asap ?arrow_forwardThe current density in a wire is uniform and has magnitude 2.0 * 10^6 A/m2, the wire’s length is 5.0 m, and the density of conduction electrons is 8.49 *10^28 m ohm3. How long does an electron take (on the average) to travel the length of the wire?arrow_forwardQ.no.7: A beam contains 2.0 × 108doubly charged posi-tive ions per cubic centimeter, all of which are moving north with a speed of 1.0 × 105 m/s. What are the (a) magnitude and (b) direc-tion of the current density J→? (c) What additional quantity do you need to calculate the total current i in this ion beam?arrow_forward
- A beam contains 2.0 × 109 doubly charged positive ions per cubic centimeter, all of which are moving north with a speed of 3.1 × 105 m/s. What is (a) the magnitude of the current density and (b) direction of the current density J→. (c) What additional quantity do you need to calculate the total current i in this ion beam?arrow_forwardThe magnitude Jof the current density in a certain wire with a circular cross section of radius R = 2.28 mm is given by J = (3.18 × 10®)r2, with J in amperes per square meter and radial distance r in meters. What is the current through the outer section bounded by r = 0.927R andr = R? Number Unitsarrow_forwardWhat is the current through a cylindrical wire of radius R = 0.1 mm if the current density is J = J0 R r , where J0 = 32000 A m2 ?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
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