At a particular point in a material with resistivity the current density has magnitude J. Show

Question:

At a particular point in a material with resistivity ρ the current density has magnitude J. Show that the power per unit volume dissipated at this point is J²ρ.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For answer-question

Essential University Physics

ISBN: 978-0321976420

3rd Edition Volume 2

Authors: Richard Wolfsonby

See More Books

Question Posted: Feb 28, 2020 05:17 AM

See More Questions

A straight cylindrical wire lying along the x axis has a length of 0.500 m and a diameter of 0.200 mm. It is made of a material that obeys Ohms law with a resistivity of o = 4.00 x 10-8 '(m. Assume...
A material of resistivity p is formed into the shape of a truncated cone of altitude h as shown in Figure P27.72. The bottom end has radius b, and the top end has radius a. Assume that the current is...
A cylindrical conductor with a circular cross section bas a radius a and a resistivity p and carries a constant current. (a) What arc the magnitude and direction of the electric-field vector E at a...
Determine whether the following taxpayers have gross income from the payment of their expenses: a. Julia's mother, Henrietta, is short of cash when it comes time to pay her property taxes. Julia pays...
What will be the impact of satellite TV on international advertising?
For flows where $\operatorname{Re} < <1$, viscous forces dominate over inertia forces. Such flows are known as creeping flows. Consider creeping flows in a lid-driven cavity. a. Write the governing...
In 2016, a hacker tricked a Lamps Plus employee into disclosing the tax information of approximately 1,300 other employees, resulting in the filing of a fraudulent income tax return of Lamps Plus...
You have just been hired by SecuriDoor Corporation, the manufacturer of a revolutionary new garage door opening device. The president has asked that you review the companys costing system and do what...
Simon Company's year-end balance sheets follow. At December 31 Assets Current Year 1 Year Ago 2 Years Ago Cash Accounts receivable, net $ 34,375 99,630 $ 40,993 69,607 Merchandise inventory Prepaid...
You are in-house general counsel of Coulomb Co., a manufacturer of electrical equipment. In the ordinary course of business you are copied on emails regarding a purchase contract for several million...
Magnetic effects involving Jupiters moon Io result in an effective voltage of about 400 kV, which drives current of some 5 MA between Io and Jupiters polar regions. At Jupiter the current produces...
A thermally insulated container of seawater carries a uniform current density of 75 mA/cm 2 . How long does it take for its temperature to increase from 15C to 20C? Use the result of the preceding...
Jane, who is expecting to finish college in May 2016, is fortunate to have already arranged full-time employment after graduation. She will begin work on July 1, 2016, as a staff accountant at a...
Which element is in the s-block of the periodic table? OS O Na O Mn O Pm
An electrical resistor is installed in a container of water to heat it. The resistor dissipates heat at a rate of 2.0 W, and the container holds 10 kg of water. How long would it take to raise the...
Pick up a token and place it on the screen. If you're stuck, ask yourself these questions: 1. Are there electronegativity differences in the molecule? 2. How is the molecule's geometry contributing...
Identify two reasons why fluorine has a much higher electronegativity than neon. 1. Fluorine is missing one electron from its 2. Fluorine's valence electrons are p level while neon has a full energy...
A cubic marshmallow is 3 cm on each side sitting in a room at atmospheric pressure (1.01x105 Pa). When placed into a vacuum chamber it expands to be 9 cm on each side when the pressure is halved....
Dave and his friend Stewart each own 50 percent of KBS. During the year, Dave receives $75,000 compensation for services he performs for KBS during the year. He performed a significant amount of work...
Activator rod AB exerts on crank BCD a force P directed along line AB. Knowing that P must have a 100-N component perpendicular to arm BC of the crank, determine (a) The magnitude of the force P, (b)...
Identify the characteristic signals that you would expect in the diagnostic region of an IR spectrum of each of the following compounds. a. b. c. d. e. f. OH
Identify the molecular formula for each of the following compounds, and then predict the mass of the expected molecular ion in the mass spectrum of each compound. a. b. c. d. e.
Propose a molecular formula for a compound that has one degree of unsaturation and a mass spectrum that displays a molecular ion signal at m/z = 86.
In October 20X5, Pollock Company exchanged a used packaging machine having a book value of $240,000 for a new machine and paid a cash difference of $30,000. The market value of the used packaging...
Project managers should track the details of their projects to be transparent and manage risks as they arise. What is another benefit of tracking in project management?
During 2020, Nike disposed of a machine that had been acquired on January 1, 2014 for a purchase price of $20 million. The machine was being depreciated using the straight-line method, a $4 million...

At a particular point in a material with resistivity the current density has magnitude J. Show

Question:

Step by Step Answer:

Now the power per unit volume dissipated ...View the full answer

Essential University Physics

Students also viewed these Sciences questions