PHYSICS F/SCI.+ENGR.W/MOD...-W/ACCESS
4th Edition
ISBN: 9780133941579
Author: GIANCOLI
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 29, Problem 10P
(II) The magnetic field perpendicular to a circular wire loop 8.0 cm in diameter is changed from +0.52 T to −0.45 T in 180 ms, where + means the field points away from an observer and − toward the observer. (a) Calculate the induced emf. (b) In what direction does the induced current flow?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
With a piece of wire, whose electrical resistance is 5Ω, a circular loop with an area of 1m2 is made.Then the loop to the plane is in a magnetic field, perpendicular to the loop. Knowingthat the intensity of the magnetic field decreases at the rate of 0.2T per second, we can say that theelectric current flowing through the loop is:
A uniform magnetic field is directed at an angleof 30° with the plane of a circular coil of radius28/2 cm and 100*28 turns. If the magnetic fieldchanges at a rate of 4T per second, calculatethe induced emf.
A 2.00 - m length of wire is held in an east–west direction andmoves horizontally to the north with a speed of 15.0 m/s. Thevertical component of Earth’s magnetic field in this regionis 40.0 µT directed downward. Calculate the induced emfbetween the ends of the wire and determine which end ispositive.
Chapter 29 Solutions
PHYSICS F/SCI.+ENGR.W/MOD...-W/ACCESS
Ch. 29.1 - Return to the Chapter-Opening Question, page 758,...Ch. 29.2 - Prob. 1BECh. 29.3 - In what direction will the electrons now in Fig....Ch. 29.5 - A bicycle headlight is powered by a generator that...Ch. 29.7 - Prob. 1EECh. 29 - Prob. 1QCh. 29 - What is the difference between magnetic flux and...Ch. 29 - Suppose you are holding a circular ring of wire...Ch. 29 - Prob. 4QCh. 29 - Is there a force between the two loops discussed...
Ch. 29 - Suppose you are looking along a line through the...Ch. 29 - The battery mentioned in Question 6 is...Ch. 29 - Prob. 8QCh. 29 - Prob. 9QCh. 29 - In situations where a small signal must travel...Ch. 29 - What is the advantage of placing the two insulated...Ch. 29 - Prob. 12QCh. 29 - A region where no magnetic field is desired is...Ch. 29 - A cell phone charger contains a transformer. Why...Ch. 29 - An enclosed transformer has four wire leads coming...Ch. 29 - The use of higher-voltage lines in homessay, 600 V...Ch. 29 - Prob. 17QCh. 29 - Prob. 18QCh. 29 - Prob. 19QCh. 29 - Will an eddy current brake (Fig. 2921) work on a...Ch. 29 - It has been proposed that eddy currents be used to...Ch. 29 - The pivoted metal bar with slots in Fig. 2935...Ch. 29 - If an aluminum sheet is held between the poles of...Ch. 29 - A bar magnet falling inside a vertical metal tube...Ch. 29 - A metal bar, pivoted at one end, oscillates freely...Ch. 29 - Since a magnetic microphone is basically like a...Ch. 29 - Prob. 1PCh. 29 - (I) The north pole of the magnet in Fig. 2936 is...Ch. 29 - Prob. 3PCh. 29 - (I) A 22.0-cm-diameter loop of wire is initially...Ch. 29 - Prob. 5PCh. 29 - (II) A 10.8-cm-diameter wire coil is initially...Ch. 29 - (II) A 16-cm-diameter circular loop of wire is...Ch. 29 - (II) (a) If the resistance of the resistor in Fig....Ch. 29 - Prob. 9PCh. 29 - (II) The magnetic field perpendicular to a...Ch. 29 - (II) A circular loop in the plane of the paper...Ch. 29 - (II) Part of a single rectangular loop of wire...Ch. 29 - (II) While demonstrating Faradays law to her...Ch. 29 - Prob. 14PCh. 29 - (II) A 22.0-cm-diameter coil consists of 28 turns...Ch. 29 - (II) A power line carrying a sinusoidally varying...Ch. 29 - (II) The magnetic field perpendicular to a single...Ch. 29 - Prob. 18PCh. 29 - (II) A 25-cm-diameter circular loop of wire has a...Ch. 29 - (II) The area of an elastic circular loop...Ch. 29 - Prob. 21PCh. 29 - Prob. 22PCh. 29 - Prob. 23PCh. 29 - (II) Inductive battery chargers, which allow...Ch. 29 - Prob. 25PCh. 29 - Prob. 26PCh. 29 - (I) The moving rod in Fig. 2912b is 13.2 cm long...Ch. 29 - (I) The moving rod in Fig. 2912b is 12.0 cm long...Ch. 29 - Prob. 29PCh. 29 - (II) If the U-shaped conductor in Fig. 2912a has...Ch. 29 - (II) Suppose that the U-shaped conductor and...Ch. 29 - (II) When a car drives through the Earths magnetic...Ch. 29 - Prob. 33PCh. 29 - Prob. 34PCh. 29 - (III) A short section of wire, of length a, is...Ch. 29 - (I) The generator of a car idling at 875-rpm...Ch. 29 - Prob. 37PCh. 29 - (II) A simple generator has a 480-loop square coil...Ch. 29 - (II) Show that the rms output of an ac generator...Ch. 29 - (II) A 250-loop circular armature coil with a...Ch. 29 - Prob. 41PCh. 29 - (I) A motor has an armature resistance of 3.05 ....Ch. 29 - (II) What will be the current in the motor of...Ch. 29 - (II) The back emf in a motor is 85 V when the...Ch. 29 - Prob. 45PCh. 29 - (I) A transformer has 620 turns in the primary...Ch. 29 - (I) Neon signs require 12 kV for their operation....Ch. 29 - (II) A model-train transformer plugs into 120-V ac...Ch. 29 - (II) The output voltage of a 75-W transformer is...Ch. 29 - (II) If 65 MW of power at 45 kV (rms) arrives at a...Ch. 29 - Prob. 51PCh. 29 - (III) Design a dc transmission line that can...Ch. 29 - (III) Suppose 85 kW is to be transmitted over two...Ch. 29 - Prob. 54PCh. 29 - (II) The betatron, a device used to accelerate...Ch. 29 - (III) Show that the electrons in a betatron,...Ch. 29 - (III) Find a formula for the net electric field in...Ch. 29 - Prob. 58GPCh. 29 - A square loop 27.0 cm on a side has a resistance...Ch. 29 - Power is generated at 24 kV at a generating plant...Ch. 29 - Prob. 61GPCh. 29 - Prob. 62GPCh. 29 - A pair of power transmission lines each have a...Ch. 29 - Show that the power loss in transmission lines,...Ch. 29 - A high-intensity desk lamp is rated at 35 W but...Ch. 29 - Prob. 66GPCh. 29 - A coil with 150 turns, a radius of 5.0 cm, and a...Ch. 29 - A search coil for measuring B (also called a flip...Ch. 29 - A ring with a radius of 3.0 cm and a resistance of...Ch. 29 - A flashlight can be made that is powered by the...Ch. 29 - A small electric car overcomes a 250-N friction...Ch. 29 - What is the energy dissipated as a function of...Ch. 29 - A thin metal rod of length rotates with angular...Ch. 29 - The magnetic field of a shunt-wound dc motor is...Ch. 29 - Prob. 75GPCh. 29 - A circular metal disk of radius R rotates with...Ch. 29 - What is the magnitude and direction of the...Ch. 29 - Prob. 78GPCh. 29 - Prob. 79GPCh. 29 - Prob. 80GP
Additional Science Textbook Solutions
Find more solutions based on key concepts
Suppose a piece of food is on the edge of a rotating microwave oven plate. Does it experience nonzero tangentia...
University Physics Volume 1
3. What is free-fall, and why does it make you weightless? Briefly describe why astronauts are weightless in th...
The Cosmic Perspective
5.12 A rocket of initial mass 125 kg (including all the contents) has an engine that produces a constant vertic...
University Physics with Modern Physics (14th Edition)
What are the functions of sensory neurons, interneurons, and motor neurons?
Conceptual Integrated Science
Express the unit vectors in terms of (that is, derive Eq. 1.64). Check your answers several ways Also work o...
Introduction to Electrodynamics
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
- The accompanying figure shows a conducting ring at various positions as It moves througli a magnetic field. What is the sense of the induced em! for each of those positions?arrow_forwardA current is induced in a circular loop of radius 1.5 cm between two poles of a horseshoe electromagnet when the current in the electromagnet is varied. The magnetic Field in the area of the loop is perpendicular to the area and has a uniform magnitude. If the rate of change of magnetic field is 10 T/s, find the magnitude and direction of the induced current if resistance of the loop is 25 .arrow_forwardA square conducting loop is in a region of uniform, constant magnetic field. Can the loop be rotated about an axis along one side and no emf be induced in the loop? Discuss, in terms of the orientation of the rotation axis relative to the magnetic-field direction.arrow_forward
- A truck is carrying a steel beam of length 15.0 m on a freeway.An accident causes the beam to be dumped off the truckand slide horizontally along the ground at a speed of 25.0m/s. The velocity of the center of mass of the beam is northwardwhile the length of the beam maintains an east–westorientation. The vertical component of the Earth’s magneticfield at this location has a magnitude of 35.0 µT. What isthe magnitude of the induced emf between the ends of thebeam?arrow_forwardSuppose that a coil consisting of 75 turns of wire shaped as a circular loop with a radius of 12 centimeters is placed with its face perpendicular to the direction of a sinusoidally alternating magnetic field whose frequency is 60 Hz and whose maximum magnitude B0 = 0.13 Tesla. Will the coil be able (in principle) to illuminate a nornal 120 volt light bulb? (Note: the emf of 120 volt household alternating current actually oscillates between +/- 170 volts. Technically, 120 volts is the square root of the average squared emf, the square ensuring that what you are averaging is positive.)arrow_forwardSuppose that a coil consisting of 75 turns of wire shaped as a circular loop with a radius of 12 centimeters is placed with its face perpendicular to the direction of a sinusoidally alternating magnetic field whose frequency is 60 Hz and whose maximum magnitude B0 = 0.13 Tesla. Will the coil be able (in principle) to illuminate a nornal 120 volt light bulb? (Note: the emf of 120 volt household alternating current actually oscillates between +/- 170 volts. Technically, 120 volts is the square root of the average squared emf, the square ensuring that what you are averaging is positive.) (Hint: the answer is yes)arrow_forward
- A certain elastic conducting material is stretched into a circular loop of 12.0 cm radius. It is placed with its plane perpendicular to a uniform 0.800 T magnetic field.When released, the radius of the loop starts to shrink at an instantaneous rate of 75.0 cm/s.What emf is induced in the loop at that instant?arrow_forwardThe magnetic flux passing through a coil of wire varies as shown. During which time interval(s) will an induced current be present in the coil? Explain.arrow_forwardA 35-turn 12.5-cm-diameter coil is placed between the polepieces of an electromagnet. When the electromagnet isturned on, the flux through the coil changes, inducing anemf. At what rate (in T/s ) must the magnetic field changeif the emf is to be 120 V?arrow_forward
- A circular coil is made up of wire bent into 22 turns, with a radius of 1.00 m. It is placedwith its axis along the direction of the Earth’s magnetic field (which is B = 50.0 µT).Over the course of one minute, the coil is flipped so that it ends up with its axisperpendicular to the field. Find the average emf induced in the coil while it was beingflippedarrow_forwardA circular coil with a diameter of 13 cm is made up of thin wire woundinto 450 turns. It is placed in a spatially constant magnetic field region such thatits plane is oriented 60.0° with respect to the field. Suppose that the field isincreasing at a rate of 10 mT/s, find the magnitude of the induced emf in the coil.arrow_forwardA circular coil of radius 4.00 cm contains 120 loops and its plane is positioned perpendicular to a uniform 0.74-T magnetic field, as shown. It is quickly and uniformly pulled from the field to a region where the B-field drops abruptly to zero. It takes 0.12 s for the whole coil to reach the field-free region. How much power is dissipated in the coil if its resistance is 170 Ω?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 LearningCollege PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax College
- Glencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-Hill
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:OpenStax College
Glencoe Physics: Principles and Problems, Student...
Physics
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Glencoe/McGraw-Hill
Magnets and Magnetic Fields; Author: Professor Dave explains;https://www.youtube.com/watch?v=IgtIdttfGVw;License: Standard YouTube License, CC-BY