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
Task 1- Faraday's law
As illustrated in Figure 1, a rectangular wire loop carries current i, has height b, width a, and is
centered on the origin. It can rotate about the z axis. For rotation angle d, the surface normal of
the rectangle enclosed by the loop is i = i cos 6 + ý sin d, and the vectors representing the four
sides of the loop are
l2 = -aý cos o + aử sin ở
l = -l
1 = -
The magnetic flux density is & By everywhere.
(a) What is the magnetic flux through the loop as a function of 6?
12 =
-aý cos o
+at sin o
13 =
-l
B-B
1 =
-1
+ ý sin o
Figure 1: Geometry of wire loop rotating in magnetic field.
Project 2 Worksheet Solutions
(b) Assuming o = wt, what is the voltage induced in the loop as a function of o?
v(t) :
The diagram below shows two long parallel wires, 1 & 2, each carrying a current of 56 A. The direction of the current for each wire
is indicated in the diagram. The distance between the wires is 24 cm & the distance between wire 2 & point P is 26 cm. Use the
standard cartesian coordinate system.
A.) At P, determine the directions of B, & B2.
direction of B, at P = Choose direction
Choose direction
P
direction of B2 at P ="
B.) Determine the x & y components of B, at P.
B1X
= OT
B1Y
C.) Determine the x & y components of B2 at P.
B2x
B2y
D.) Determine the magnitude & direction of Bnet at P.
Bnet
direction of Bnet
o to the VERTICAL in
--- Choose quadrant ---
The loop of wire shown in (Figure 1) forms a right triangle and carries a current I = 6.00 A in the direction shown. The loop is in a uniform magnetic field that has magnitude B = 3.50 T directed into the screen.What is the magnitude of the net torque on the loop? Calculate the net torque from the torques calculated in part C and also from τ=NIABsinϕ.Express your answer in newton-meters. Enter your answers numerically separated by commas
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
- A pair of parallel conducting rails that are L = 12 cm apart lies at right angles to a uniform magnetic field of 0.7 T directed into the page, as shown in the figure below. A R = 17 resistor is connected across the rails. A conducting bar is moved to the right at 2 m/s across the rails. R ww Submit down 1) What is the current in the resistor? (Express your answer to two significant figures.) Submit 2) What direction is the current in the bar (up or down)? • up B, into page Submit Ø O to the left 2 m/s 4) What direction is the magnetic force on the bar due to the induced current? to the right upwards downwards into the page out of the page Submit 3) What is the magnetic force on the bar due to the induced current? (Express your answer to two significant figures.) L mA + mN +arrow_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_forwardUse 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_forward
- In the diagram at right, an uncharged conducting bar is moving with constant velocity v to the left through a region where there is a uniform magnetic field pointing out of the page. What charge distribution will the bar have, as a result of its motion? B out of page The bottom of the bar will have positive charge, and the top of the bar will have negative charge. The bar will remain electrically neutral at all points. The top of the bar will have positive charge, and the bottom of the bar will have negative charge. The right side of the bar will have positive charge, and the left side of the bar will have negative charge. The bar will gain a net positive charge, distributed uniformly along its length. The bar will gain a net negative charge, distributed uniformly along its length, The left side of the bar will have positive charge, and the right side of the bar will have negative charge.arrow_forwardCCW Each diagram shows a rectangular conducting loop, including a small amount of resistance and an ammeter, in the presence of an external magnetic field. The direction clearly indicated, and a notation in the upper right-hand corner of each image indicates how the magnitude of the field is changing with time. Sort the diagrams according to wh in the loop would be clockwise (CW) or counterclockwise (CCW) by dragging each diagram to the appropriately labeled area, or leave it in the central area if neither label applie CW <0 dB O O O O O O dB dt X OF O O O TRO O O O O O X X O. O O X O A O X O O O O O O O X X O O O O O X O O O O X O O OKO O X X X X X O O O O O O O O O X. O O 9 O O O O O O O dB TOO O O O O O O O 100 O O O O O O O O O O O O O O O O` O O O` O. O O O O O O O O O O O O O O O O OSO O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O OZO O O O O O O O OSO O O O O O O O <0 dB dt dB B TRO X A X X X X X X Xarrow_forwardThe diagram below shows two long parallel wires, 1 & 2, each carrying a current of 98 A. The direction of the current for each wire is indicated in the diagram. The distance between the wires is 2.5 cm & the distance between wire 1 & point P is 6 cm. Use the standard cartesian coordinate system. 1 X P A.) At P, determine the directions of B₁ & B₂. direction of B₁ at P =- direction of B₂ at P => + ✓ B.) Determine the x & y components of B₁ at P. B1x = B₁y = C.) Determine the x & y components of B₂ at P. B₂x = B2y = вгу D.) Determine the magnitude & direction of Bnet at P. Bnet = direction of Bnet = to the HORIZONTAL in --- Choose quadrant --- Varrow_forward
- Problem 1 All parts of this problem refer to the circular loop of wire in the coordinate system shown, with the z axis pointing out of the page. In each case, you are asked to give the direction of the current induced in the loop as "Clockwise", "Counter-clockwise", or "No current". You need not show your reasoning. Loop at rest. B uniform, in +z (that is, k) direction, increasing in mag- opyight 2021Princet nitude. b) Loop at rest. B uniform, in -z (that is, –k) direction, decreasing in magnitude. B = cak with constant c > 0, constant in time, loop moving at constant velocity in +x c) direction. B = crk with constant c > 0, constant in time, loop moving at constant velocity in -x d) direction. crk with constant c > 0, constant in time, loop moving at constant velocity in +y e) direction. %3Darrow_forwardThe south pole of a bar magnet is brought toward the current loop of (Figure 1). Figure S N 1 of 1 Part A Does the bar magnet attract, repel, or have no effect on the loop? Explain. Match the words in the left column to the appropriate blanks in the sentences on the right. produces a magnetic dipole with a south pole on the left and a north pole on the right. produces a magnetic dipole with a north pole on the left and a south pole on the right. cannot produce a magnetic field at all. not affected by the current loop. repelled by the nearest south pole of the current loop. repelled by the nearest north pole of the current loop. attracted by the nearest south pole of the current loop. attracted by the nearest north pole of the current loop. The current loop shown Rese Therefore, the approaching south pole of the magnet isarrow_forwardA circular loop of wire with radius 0.0430 m and resistance 0.152 N is in a region of spatially uniform magnetic field, as shown in the following figure (Figure 1). The magnetic field is directed out of the plane of the figure. The magnetic field has an initial value of 8.48 T and is decreasing at a rate of -0.622 T/s. Part A Part B What is the rate at which electrical energy is being dissipated by the resistance of the loop? Express your answer with the appropriate units. HA ? P = Value Units Submit Request Answerarrow_forward
- PLSS ANSWER WITHIN 8MINS An electric field of 185 x10-6 VIm is induced within the loop of long solenoid with cross sectional area of 3.18 cm2. The radius of the loop is 3.31 cm. Calculate the number of turns if the current in the winding is increasing at a rate of 87 A/s. • Final answer should be expressed in two (2) decimal places. Round up or down accordingly. • For the final answer, please write/include the unit, express you answer in "Turns"arrow_forwardWhat is the expression for the magnetic dipole moment of a small loop of current, with the radius of the loop given by r and the current given by 1? Use I for current, r for radius, pi for T. Use * for multiplication and / for division and collect terms using (). Use ^ for exponent, i.e. for æ" write x^n. You can add an optional tip or note related to the prompt like this. Example: To test this example, the correct answer is R_1*R_2/R_3 Submit Previous bux.bracu.ac.bdarrow_forwardShown in the figure below is a so-called "Bar Slide" apparatus. A bar of mass m, length L, and resistance R is electrically attached to a set of vertical rails that allow the bar and rails to form a closed loop. The whole system is immersed in a magnetic field B. The bar is released from rest and gravity causes it to accelerate downward. Please note that all answers to this problem are symbolic (formulas). We will assume no friction. Please enter POSITIVE formulas for every answer. L m, R B-field into the screen Determine all of the following formulas:arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
University Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSON
Introduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press
Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Lecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-Wesley
College Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
University Physics (14th Edition)
Physics
ISBN:9780133969290
Author:Hugh D. Young, Roger A. Freedman
Publisher:PEARSON
Introduction To Quantum Mechanics
Physics
ISBN:9781107189638
Author:Griffiths, David J., Schroeter, Darrell F.
Publisher:Cambridge University Press
Physics for Scientists and Engineers
Physics
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:9780321820464
Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:Addison-Wesley
College Physics: A Strategic Approach (4th Editio...
Physics
ISBN:9780134609034
Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:PEARSON
THE BAR MAGNET; Author: 7activestudio;https://www.youtube.com/watch?v=DWQfL5IJTaQ;License: Standard YouTube License, CC-BY