Tutorials in Introductory Physics
1st Edition
ISBN: 9780130970695
Author: Peter S. Shaffer, Lillian C. McDermott
Publisher: Addison Wesley
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 8.1, Problem 1cT
In each of the diagram below, the position of a loop is shown at two times,
The loop starts from rest in each case and is displaced to the right in Case A and to the left in Case B. On the diagrams indicate:
• the direction of the induced current through the wire of the loop,
• the magnetic moment of the loop,
• an area vector for each loop,
• the sign of the flux due to the external magnetic field (at both instants), and
• the sign of the induced flux (at both instants).
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A single turn coil of radius 5.00 cm is held in a vertical plane and a magnet is rapidly moved relative to the coil as shown in the diagram below. The field inside the coil changes from 0.040 T to 0.025 T in a matter of 0.200 seconds. If the resistance of the coil is 6.00 Ohms, what is the magnitude and direction of the induced current in a coil as viewed from the side of the magnet? Make sure to include clear explanations for your choice of current direction.
A conducting cylinder is free to roll along two inclined conducting rails connected to a power supply, as shown in the top view below (uphill is to the left).
(The magnetic field vector B points exactly vertically downward, and so is not perpendicular to the inclined rails.) Find an expression for the minimum current I needed to make the cylinder roll uphill, in terms of w, |B|, the incline angle theta, and the cylinder's mass m. Do not assume that theta is small.
Consider the two current-carrying wires in the figure. On the left is a long, straight wire carrying current I1. In the same plane, there is a rectangular loop, which carries a current I2. The dimensions of the rectangular loop are shown in the figure, and the left side of the loop is a distance c from the wire. What are the magnitude and direction of the net force exerted on the loop by the magnetic field created by the wire? (Use any variable or symbol stated above along with the following as necessary: ?0, ℓ, and a.)
Chapter 8 Solutions
Tutorials in Introductory Physics
Ch. 8.1 - A copper wire loop is placed in a uniform magnetic...Ch. 8.1 - Suppose that the loop is now placed in the...Ch. 8.1 - In each of the diagram below, the position of a...Ch. 8.1 - D. State whether you agree or disagree with each...Ch. 8.1 - The diagram at right shows a stationary, copper...Ch. 8.1 - To understand the interaction between the wire...Ch. 8.1 - A wire loop moves from a region with no magnetic...Ch. 8.1 - At two later instants, t=t1andt=t1+t the loop is...Ch. 8.2 - The resistance of loop 2 is greater than that loop...Ch. 8.2 - Suppose that loop 2 were replaced by a wooden...
Additional Science Textbook Solutions
Find more solutions based on key concepts
At the right is a sketch showing one of the atoms in the diffuse, cool cloud of gas described in the previous q...
Lecture- Tutorials for Introductory Astronomy
19. A car starts from rest at a stop sign. It accelerates at 4.0 m/s2 for 6.0 s, coasts for 2.0s, and then slow...
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)
Write each number in scientific notation.
8. 0.00053
Applied Physics (11th Edition)
9.64 The motor of a table saw is rotating at 3450 rev/min. A pulley attached to the motor shaft drives a second...
University Physics with Modern Physics (14th Edition)
(II) An unstable particle is at rest and suddenly decays into two fragments. No external forces act on the part...
Physics for Scientists and Engineers with Modern Physics
The electric Field at the center of a uniformly charged ring is obviously zero, yet Example 22.6 shows that the...
Essential University Physics: Volume 2 (3rd Edition)
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
- Use the worked example above to help you solve this problem. A coil with 21 turns of wire is wrapped on a frame with a square cross-section 2.14 cm on a side. Each turn has the same area, equal to that of the frame, and the total resistance of the coil is 0.561 Ω. An applied uniform magnetic field is perpendicular to the plane of the coil, as in the figure. (a) If the field changes uniformly from 0.00 T to 0.540 T in 0.731 s, find the induced emf in the coil while the field is changing. = (b) Find the magnitude of the induced current in the coil while the field is changing.I =arrow_forwardA square flat coil that has N turns, encloses an area A, and carries a current i has its central axis parallel to a uniform magnetic field in which it is immersed. What is the net torque on the coil? How would the torque change if you rotated the loop such that the field and its central axis are perpendicular? Make sure to answer both parts of the question and show all work.arrow_forwardA metal wire of mass m slides without friction on two horizontal rails spaced a distance d apart, as in the figure below. The track lies in a vertical uniform magnetic field . Generator G produces a constant current i in the wire and the rails (even as the wire moves). Find the velocity of the wire's motion as a function of time, assuming it to be stationary at t = 0. (Use any variable or symbol stated above along with the following as necessary: B for the magnitude of . All quantities are in SI units. Enter the sign of the expression, taking right to be positive.)arrow_forward
- Use the worked example above to help you solve this problem. A coil with 21 turns of wire is wrapped on a frame with a square cross-section 2.14 cm on a side. Each turn has the same area, equal to that of the frame, and the total resistance of the coil is 0.561 Ω. An applied uniform magnetic field is perpendicular to the plane of the coil, as in the figure. Suppose the magnetic field changes uniformly from 0.540 T to 0.162 T in the next 0.666 s. (a) Compute the induced emf in the coil. = V(b) Compute the induced current.I = A counterclockwise as viewed from above the coilarrow_forwardTwo colis are placed such that the longer coil (Coil #1) is placed inside of the shorter coil (Coil #2). The coils are both wound in the same direction (couterclockwise) and a current of 0.25 AA travels through the coils in the same direction. This situation is roughly illustrated in the figure below (although the number of turns, length, and radius in the image is NOT accurate or to scale) Coil #1 has 536 turns wrapped over a length of L1= 8.2cm and has a radius of 1.5cm . Coil #2 has 109 turns wrapped over a length of L2=2.0 cm and has a radius of 5.5 cm .arrow_forwardPlease answer if true or false, and why 1. If the motion of the magnet causes decreasing downward flux through the loop, The direction of the induced magnetic field would be against the downward flux. - True or False? 2. In a conducting rod moving in a uniform magnetic field, the magnetic field force supports the electric field force. - True or False? 3. The induced electric field is inversely proportional to the circumference of the loop, assuming all the other parameters are constant. - True or False?arrow_forward
- The arrangement illustrated in the figure below is composed of six finite straight wires of length l. The electric current flowing in such an arrangement is i. Using the Biot-Savart law, calculate: The magnitude of the magnetic field at point P due to the wire located along segment ab.The answer is in the second image. I am trying to use the standard biot-savart, which is B = (μ0*I/4π) * ∫dl * sinθ / r^2, and it always gives me 16*pi*l at the denominator, instead of 8pi*l. Solve it using B = (μ0*I/4π) * ∫dl * sinθ / r^2, and note that the image with the answer is correct.arrow_forwardthe figure below represents the xy plane that cuts perpendicularly two infinite and parallel wires that carry a current I, of the same magnitude, but in opposite directions.Draw the vectors to show the magnetic field B of each wire and resultant field Br at point P.NOTE: THE SECOND IMAGE IS THE ANSWER. I WOULD LIKE TO KNOW WHY Br = 2Bsin(θ) So, explain in details why Br = 2Bsinθ, there is no need to calculate anything elsearrow_forwardAlthough the net force produced by a magnetic field on a closed loop of a wire is zero, the loop has a net torque. A square loop of wire with sides of length 12 cm and carrying a current of 9A is placed inside a magnetic field with magnitude of 5T. What is the maximum magnitude of torque on the loop? Show your work.arrow_forward
- A circular loop of wire sits face on to 2 tesla magnetic field that points into the page, as shown in the upper diagram at right. The wire loop is turned a quarter turn by a crank, so that the right edge of the loop drops into the page and the left side of the loop comes out of the page. The radius of the loop is 20cm and the quarter turn takes 0.5 seconds. (a) What is the average emf induced in the loop, and does the current in the wire flow in the direction of the arrow on the loop or in the opposite direction? (b) If the crank continues to turn the loop another quarter turn in 0.5 seconds in the same direction, until it looks like the bottom picture, what will be the average emf induced in the wire, and does the current in the wire flow in the direction of the arrow or in the opposite direction?arrow_forwardFind the magnetic flux through all five surfaces of the wedge in Figure 1, if the magneticfield in the area is given by: B= (0.002î+ 0.003ĵ) Tand show that the total flux through the wedge is zero.In your answer, play particular attention to the neatness of the presentation and payattention to the following and apply them in your answer:(i) State the approach you are going to adopt to solve the problem.arrow_forwardThe current I in a long, straight wire is constant and is directed toward the right. Conducting loops A, B, C, and D are moving, in the directions shown, near the wire. a) Is the direction of the induced current clockwise or counterclockwise, or is the induced current zero for loop D? Briefly explain. b) What is the direction of the net force that the wire exerts on the loop D? (No explanation is needed.) c) Is the direction of the induced current clockwise or counterclockwise, or is the induced current zero for loop C? Briefly explain.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
THE BAR MAGNET; Author: 7activestudio;https://www.youtube.com/watch?v=DWQfL5IJTaQ;License: Standard YouTube License, CC-BY