6. A circular loop of wire is placed in a uniform magnetic field pointing into the page, as shown below. The strength of the field is 10 Tesla. The wire loop has a radius of 0.01 meter. (The area of a circle is tr².) There is a 0.2 A current in the wire, going clockwise. Find the magnitude and direction of the torque (if any) on the loop. Find the potential energy of the loop. а. b. ХXXXX XXXX В X X X XXX X X X XX X X X X X X X XX XXX x X

6. A circular loop of wire is placed in a uniform magnetic field pointing into the page, as shown below. The strength of the field is 10 Tesla. The wire loop has a radius of 0.01 meter. (The area of a circle is tr².) There is a 0.2 A current in the wire, going clockwise. Find the magnitude and direction of the torque (if any) on the loop. Find the potential energy of the loop. а. b. ХXXXX XXXX В X X X XXX X X X XX X X X X X X X XX XXX x X

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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50. A paramagnetic substance, in an external magnetic field, is thermally isolated. The field is then removed. As a result: A. the magnetic energy of the magnetic dipoles decreases В. the temperature of the substance increases C. the magnetization decreases, but only slightly D. the magnetization reverses direction E. none of the above ans: E
A 10-cm-long wire is pulled along a U-shaped conducting rail in a perpendicular magnetic field. The total resistance of the wire and rail is 0.20 Ω. Pulling the wire with a force of 1.0 N causes 4.0 W of power to be dissipated in the circuit.a. What is the speed of the wire when pulled with a force of 1.0 N?b. What is the strength of the magnetic field?
Suppose you wish to produce a 1-T magnetic field in a toroid with an iron core for which magnetic susceptibility is x = 3 x 10³. The toroid has a mean radius of 14 cm and is wound with 600 turns. Hint a. What current is required to produce this magnetic field in the iron core? Current of b. For comparison, what current is required to produce the same magnetic field in an air-filled toroid of same geometry? Current of A is needed. Submit Question A is needed for toroid with no iron core. While it is not always practical to have region of magnetic field filled with ferromagnetic materials, this dramatic increase in strength of magnetic field produced is useful in some applications you will see in upcoming chapters. Question Help: Message instructor
D4
Suppose a neuron in the brain carries a current of 5.0 * 10-8 A.Treating the neuron as a straight wire, what is the magnetic field itproduces at a distance of 7.5 cm?A. 1.3 * 10-13 T B. 4.2 * 10-12 TC. 1.1 * 10-10 T D. 3.3 * 10-7 T
1. A student uses a coil of radius 14 cm with 90 windings.a) Calculate the expected slope for a plot of magnetic field vs current in this coil.b) She performs the lab and measures a slope of 4.2 x 10^-4 T/A. Based on this slope, what valuedoes she calculate for μo ?c) Calculate the percent error between her measured value of μo and the theoretical value.2. She then uses a permanent magnet of strength B = 0.5 mT to induce a voltage in the (same) coil.Calculate the expected voltage if she pulls the magnet from the coil in 0.02 seconds.
Mono-ionized atoms (an electron withdrawn) are accelerated and then passed through a speed selector made up of perpendicular electric and magnetic fields. The electric field is 155 V / m and the magnetic field is 0.0315 T. The ions then enter a uniform magnetic field of modulus 0.0175 T which is oriented perpendicular to their speed.at. How fast do the ions move as they emerge from the speed selector?b. If the radius of the path of the ions in the second magnetic field is 17.5 cm, what is their mass?
QUESTION 23 In generating electricity, a magnet, surrounded by wires connected to the electrical grid, will be made to spin, using wind, a steam turbine, or moving water. Which answer best explains what is happening in the wires during this process. a. The magnet does not need to move, and still has the capability to make electrons move in the wires that surround it. b. An induced voltage and current flow is set up in the wires surrounding a magnet due to changes in magnetic temperature. c. A magnetic field surrounds the rotating magnet, pushes on the electrons in the wires, thus giving those electrons energy per charge (voltage). d. Light from the magnet is able to push electrons out of the material that makes up the wires. In so doing, the wires are made to have a flowing electrical current.
q18
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