College Physics
2nd Edition
ISBN: 9780134601823
Author: ETKINA, Eugenia, Planinšič, G. (gorazd), Van Heuvelen, Alan
Publisher: Pearson,
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 21, Problem 3P
* To check whether a lightbulb permanently attached to a coil is still good, you place the coil next to another coil that is attached to a battery, as shown in Figure P21.3. Explain how or whether each of the following actions can help you determine if the lightbulb works. (a) Close the switch in circuit A. (b) Keep the switch in circuit A closed (c) Open the switch in circuit A. Indicate any assumptions that you made.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A KVL and KCL.pdf - Adobe Acrobat Pro DC (32-bit)
File Edit View Sign Window Help
Home
Tools
KVL and KCL.pdf
(?
1 / 2
135%
Search tools
Create PDF
A. Use KVL and KCL and write the equations for the circuit shown to find the unknown currents. State
Combine Files
in detail which node you are using (KCL) or which loop. where do you start on the loop, and which
direction you are going, CW or CCW if KVL. Do not solve the equations
Edit PDF
FEATURED
A Adobe Sign
40
l. Fill & Sign
Export PDF
14 V
EI Organize Pages
Send for Comme.
Comment
I3
Scan & OCR
16 V
1Ω
I2
Protect
% More Tools
Activate WHelp us make Acrobat better.
Go to Settings'e
Tell us about your PDF needs.
Click here
7:23 PM
O Type here to search
O ENG
99+
3/4/2021
23
R2
R1
Consider the circuit shown in the figure. Suppose that the switch has been open for a very long time. The switch is then closed. When is the current in R2 zero?
O Immediately after closing the switch.
A very long time after closing the switch.
O The current in R2 is never zero.
Not enough information is given.
O One time constant after closing the switch.
Q11.
Please look at the circuit diagram given,
the switch is originally kept at point a for a
long time, then the switch is quickly
flipped to point b.it is your job to
determine the following.
a. the frequency of current oscillations in
the LC circuit.
b. the current amplitude of the oscillations
which result.
30.0 V
15.0
5.80 μF
ele
48.0 mH
Chapter 21 Solutions
College Physics
Ch. 21 - Review Question 21.1 Your friend thinks that...Ch. 21 - Review Question 21.2 You have a bar magnet and a...Ch. 21 - Review Question 21.3 What difficulty would occur...Ch. 21 - Review Question 21.4 Why do we write the law of...Ch. 21 - Review Question 21.5 How does the law of...Ch. 21 - Review Question 21.6 A capacitor in an electric...Ch. 21 - Prob. 7RQCh. 21 - Review Question 21.8 Explain how (a) an electric...Ch. 21 - 1. In which of the experiments with a loop and a...Ch. 21 - If you move the coil in Figure Q21.2 toward the N...
Ch. 21 - The magnetic flux through a 100-cm2 loop is...Ch. 21 - Your friend says that the emf induced in a coil...Ch. 21 - 5. A metal ring lies on a table. The S pole of a...Ch. 21 - 6. One coil is placed on lop of another The bottom...Ch. 21 - Two coils are placed next to each other flat on...Ch. 21 - 8. Two identical bar magnets are dropped...Ch. 21 - A windows metal frame is essentially a metal loop...Ch. 21 - Four identical loops move at the same velocity...Ch. 21 - A 12-V automobile battery provides the thousands...Ch. 21 - A respiration detector consists of a coil placed...Ch. 21 - A parallel plate capacitor and a lightbulb are...Ch. 21 - Prob. 14MCQCh. 21 - A bar magnet falling with the north pole facing...Ch. 21 - 16. An induction cooktop has a smooth surface When...Ch. 21 - Describe three common applications of...Ch. 21 - 18. Two rectangular loops A and B are near each...Ch. 21 - A simple metal detector has a coil with an...Ch. 21 - 20. Construct flux-versus-time and emf-versus-time...Ch. 21 - How is it possible to get a 2000-V emf from a...Ch. 21 - You connect a capacitor and a lightbulb in series...Ch. 21 - Prob. 23CQCh. 21 - * You and your friend are performing experiments...Ch. 21 - You decide to use a metal ring as an indicator of...Ch. 21 - * To check whether a lightbulb permanently...Ch. 21 - * Flashlight without batteries A flashlight that...Ch. 21 - You need to invent a practical application for a...Ch. 21 - * Detect burglars entering windows. Describe how...Ch. 21 - 7. * A coil connected to an ammeter can detect...Ch. 21 - * The B field in a region has a magnitude of 0.40...Ch. 21 - 9. EST How do you position a bicycle tire so that...Ch. 21 - * EST Estimate the magnetic flux through your head...Ch. 21 - 11. * Estimate the magnetic flux through the...Ch. 21 - Prob. 12PCh. 21 - 13. You have the apparatus shown in Figure P21.13....Ch. 21 - * You suggest that eddy currents can stop the...Ch. 21 - * Your friend thinks that an induced magnetic...Ch. 21 - The magnetic flux through three different coils is...Ch. 21 - 17. The magnetic flux through three different...Ch. 21 - 18. A magnetic field passing through two coils of...Ch. 21 - BIO Stimulating the brain in transcranial magnetic...Ch. 21 - * To measure a magnetic field produced by an...Ch. 21 - Prob. 21PCh. 21 - 22 * BIO Breathing monitor An apnea monitor for...Ch. 21 - 23. * A bar magnet induces a current in an -turn...Ch. 21 - * An experimental apparatus has two parallel...Ch. 21 - A Boeing 747 with a 65-m wingspan is cruising...Ch. 21 - Prob. 27PCh. 21 - 28. ** BIO EST Magnetic field and brain cells...Ch. 21 - * You need to test Faraday's law You have a...Ch. 21 - 30. * You build a coil of radius r (m) and place...Ch. 21 - * EST Generator for space station Astronauts on a...Ch. 21 - 35. * A toy electric generator has a 20-tum...Ch. 21 - 36. * A generator has a 450-turn coil that is 10...Ch. 21 - 39. * A generator has a 100-turn coil that rotates...Ch. 21 - Prob. 40PCh. 21 - * A rectangular wire loop is moving with constant...Ch. 21 - field that points into the page (Figure P21.42)....Ch. 21 - 43. The voltage across an AC power supply is given...Ch. 21 - 44. * The alternating current through a capacitor...Ch. 21 - * The alternating current through a solenoid is...Ch. 21 - 46. * The rms voltage of household AC in Europe is...Ch. 21 - Prob. 47PCh. 21 - Prob. 48PCh. 21 - 49. You need to build a transformer that can step...Ch. 21 - 50. Your home’s electric doorbell operates on 10...Ch. 21 - 51. A 9.0-V battery and switch are connected in...Ch. 21 - * You are fixing a transformer for a toy truck...Ch. 21 - 53. * A wire loop has a radius of 10 cm. A...Ch. 21 - BIO Hammerhead shark A hammerhead shark (Figure...Ch. 21 - ** You have a 12-V battery, some wire, a switch,...Ch. 21 - 61.* EST A sparker used to ignite lighter fluid in...Ch. 21 - * EST Design a magnetometer Your friend needs to...Ch. 21 - Prob. 63GPCh. 21 - 64 EST MRI Jose needs an MRI (magnetic resonance...Ch. 21 - * Magstripe reader A magstripe reader used to read...Ch. 21 - 66. Show that when a metal rod L meters long moves...Ch. 21 - 67. ** EST The Tower of Terror ride Magnetic...Ch. 21 - BIO Magnetic induction tomography (MIT) Magnetic...Ch. 21 - BIO Magnetic induction tomography (MIT) Magnetic...Ch. 21 - BIO Magnetic induction tomography (MIT) Magnetic...Ch. 21 - BIO Magnetic induction tomography (MIT) Magnetic...Ch. 21 - BIO Magnetic induction tomography (MIT) Magnetic...Ch. 21 - BIO Magnetic induction tomography (MIT) Magnetic...Ch. 21 - BIO Magnetic induction tomography (MIT) Magnetic...Ch. 21 - BIO Magnetic induction tomography (MIT) Magnetic...Ch. 21 - BIO Magnetic induction tomography (MIT) Magnetic...
Additional Science Textbook Solutions
Find more solutions based on key concepts
8. A hollow cylindrical copper pipe is 1.50 m long and has an outside diameter of 3.50 cm and an inside diamete...
College Physics (10th Edition)
Unreasonable Results (a) Suppose you want to design a steam engine that has heat transfer to the environment at...
College Physics
Using the definitions in Eqs. 1.1 and 1.4, and appropriate diagrams, show that the dot product and cross produc...
Introduction to Electrodynamics
What class of motion, natural or violent, did Aristotle attribute to motion of the Moon?
Conceptual Physics (12th Edition)
Analyzing crystal diffraction is intimately tied to the various different geometries in which the atoms can be ...
Modern Physics
Choose the best answer to each of the following. Explain your reasoning. Observations indicate that galaxies wi...
Cosmic Perspective Fundamentals
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
- This problem is a continuation of Problem 45. You are part of a team working in a machine parts mechanics shop. An important customer has asked your company to provide springs with a very precise force constant k. You devise the electrical circuit shown in Figure P25.45 to measure the spring constant of each of the springs to be provided to the customer. The circuit consists of two identical, parallel metal plates connected to identical metal springs, a switch, and a battery with emf V. With the switch open, the plates are uncharged, are separated by a distance d, and have a capacitance C. To provide a comparison value for the spring constant that you found in Problem 45, you slide a slab of material with dielectric constant and thickness t between the plates, so that it is in contact with one of the plates as shown in Figure P25.50. When the switch is closed, the plates become charged and attract each other. The distance between the plates changes by a factor f, after which the plates are in equilibrium between the spring forces and the attractive electric force between the plates. To keep the plates from going into oscillations, you hold each plate with insulating gloves as the switch is closed and apply a force on the plates that allows them to move together at a slow constant speed until they are at the equilibrium separation, at which point you can release the plates. Find an expression for the spring constant in terms of C, d, V, k, t, and f. Figure P25.50arrow_forward(a) What is the voltage output of a transformer used for rechargeable flashlight batteries, if its primary has 500 turns, its secondary 4 turns, and the input voltage is 120 V? (b) What input current is required to produce a 4.00 A output? (c) What is the power input?arrow_forwardThe open switch in Figure CQ32.7 is thrown closed at t = 0. Before the switch is closed, the capacitor is uncharged and all currents are zero. Determine the currents in L, C. and R, the emf across L, and the potential differences across C and R (a) at the instant after the switch is closed and (b) long after it is closed.arrow_forward
- 1Write out generic mathematical expressions for current and potential difference in a series circuit. 2What is magnetic induction? the creation of a magnet by bringing a magnet close to another non-magnetic material branch of physics dealing with the interaction of electric and magnetic fields an area surrounding a magnet in which a magnetic force acts on a moving charge a piece of metal that has atoms aligned such that it attracts other pieces of metal 3A square boat of area = 2 m2 floats on the water with 1 m of boat submerged in the water. Estimate the buoyant force on the boat and the pressure at the bottom of the boat. The density of water is 997 kg/m3. Fb = 30,000 N and P = 20,000 Pa Fb = 10,000 N and P = 20,000 Pa Fb = 100 N and P = 200 Pa Fb = 20,000 N and P = 10,000 Pa professor can you answer these 3 questions please?arrow_forwardA transformer steps 300 V down to 7.5 V to operate an arc welder that uses a current of 190 A. The primary current is 5.0 A. a) Calculate the ratio Np/Ns b) Calculate the efficiency of the transformer and suggest how can the efficiency be maximised? c) Suppose you are given three coins of wire, is that possible to make a transformer that uses three coils of wire? Explain your answer.arrow_forwardA transformer is used to provide voltage to a neon sign. The input voltage is 120 V and the output voltage is 600 V. The number of turns on the primary coil of the transformer is 300. The current supplied to the transformer is 2.5 A. What is the number of turns on the secondary coil and the current used in the neon sign? a. The number of turns in the secondary coil is 240 and the current in the sign is 2.5 A b. The number of turns in the secondary coil is 60 and the current in the sign is 2.5 A c. The number of turns in the secondary coil is 240 and the current in the sign is 0.5 A d. The number of turns in the secondary coil is 60 and the current in the sign is 0.5 A e. The number of turns in the secondary coil is 1500 and the current in the sign is 0.5 Aarrow_forward
- How can you oppose any variation in the current flowing through the circuit? a use a capacitor b use an inductor c use a switch d use a generatorarrow_forwardA primary coil of a transformer in a toy electric car has 300 turns and the secondary coil has 30 turns. How many volts will be induced when the primary coil is connected to a 9 V battery? The document you upload for this should show how you solved the problem as well as the final answer and correct unit for the answer. Is this a step-up transformer or a step-down transformer? Explain how you know which type it is. The document should have a short description of how you know what type of transformer is being described in this prompt. Make sure to use complete sentences and to use proper language mechanics in your response.arrow_forwardKirchoff's Law in 2 loops Solve the problem by following the steps below: a. Find the necessary KVL/KCL equations to solve the problem. b. Compute for the I1, I2, and I3. c. Resketch the circuit and label the current with the correct direction and values for each resistor. d. Find the V1, V3, V5, and V7. e. Find the P1, P3, P5, and P7.arrow_forward
- What is the principle reason why, when a small electric motor is first started up, the current through the armature is large for a moment and then settles to a much smaller value? a. the voltage applied to the armature is higher at first b. the temperature of the armature increases at first, thus increasing the resistance of the armature c. as the motor speeds up, it generates a higher EMF in the opposite direction to the applied voltage d. the counter EMF is higher at firstarrow_forwardthe parallel combination of R, and R2 is connected in series with the parallel combination of R3 and R4. The series-parallel combination is then connected across a 24 V DC power supply. A. Draw the schematic diagram and label the circuit elements. B. Calculate the equivalent resistance of the circuit. |(Ans. Req = 198. 7013 N) C. Find the total current of the circuit, the voltage across each resistor and the current through each resistor.arrow_forwardPart A A step-up transformer increases 10 V to 150 V . What is the current in the secondary coil as compared to the primary coil? Assume 100% efficiency. Express your answer using two significant figures. ? %3Darrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Physics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
College PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax College
Physics for Scientists and Engineers with Modern ...PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Glencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-Hill
Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers, Technology ...
Physics
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:OpenStax College
Physics for Scientists and Engineers with Modern ...
Physics
ISBN:9781337553292
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Glencoe Physics: Principles and Problems, Student...
Physics
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Glencoe/McGraw-Hill
Physics for Scientists and Engineers
Physics
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
What is Electromagnetic Induction? | Faraday's Laws and Lenz Law | iKen | iKen Edu | iKen App; Author: Iken Edu;https://www.youtube.com/watch?v=3HyORmBip-w;License: Standard YouTube License, CC-BY