An Introduction to Physical Science
14th Edition
ISBN: 9781305079137
Author: James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 8, Problem 3MC
In a dc circuit, how do electrons move? (8.2)
- (a) with a slow drift velocity
- (b) in alternate directions
- (c) near the
speed of light - (d) none of the preceding
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
A jet develops a 0.25 volt potential difference between the tips of its wings when flying above a region of the earth where the earth's magnetic field points essentially vertically upward. If the jet's wingspan is 35 meters, what is its speed?
(Hint: The answer is 143 m/s)
An electron is happily moving along in a straight-line when it suddenly finds itself moving in parallel with a long stretch of wire that is carrying a current. What will happen to the electron if the (technical) current is moving in the direction opposite to the electron? (Questions to think about: will it be deflected? If so, in which direction?)
A rail gun uses electromagnetic forces to accelerate a projectile to very high velocities. The basic mechanism of acceleration is relatively simple and can be illustrated in the following example. A metal rod of mass 40.0 g and electrical resistance 0.300 Ω rests on parallel horizontal rails that have negligible electric resistance. The rails are a distance L = 9.00 cm apart. (Figure 1)The rails are also connected to a voltage source providing a voltage of V = 5.00 V .The rod is placed in a vertical magnetic field. The rod begins to slide when the field reaches the value B = 0.131 T . Assume that the rod has a slightly flattened bottom so that it slides instead of rolling. Use 9.80 m/s^2 for the magnitude of the acceleration due to gravity.
A) Find μ_s, the coefficient of static friction between the rod and the rails. Give the answer numerically
Chapter 8 Solutions
An Introduction to Physical Science
Ch. 8.1 - What is the difference between the law of charges...Ch. 8.1 - Prob. 2PQCh. 8.2 - Prob. 1PQCh. 8.2 - Prob. 2PQCh. 8.2 - A coffeemaker draws 10 A of current operating at...Ch. 8.3 - Prob. 1PQCh. 8.3 - Prob. 2PQCh. 8.3 - Prob. 8.2CECh. 8.4 - How are the law of poles and the law of charges...Ch. 8.4 - Where is the Earth's north magnetic pole located?
Ch. 8.5 - What are the two basic principles of...Ch. 8.5 - What's the difference between a motor and a...Ch. 8.5 - Prob. 8.3CECh. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - Prob. BMCh. 8 - Prob. CMCh. 8 - Prob. DMCh. 8 - Prob. EMCh. 8 - Prob. FMCh. 8 - Prob. GMCh. 8 - Prob. HMCh. 8 - Prob. IMCh. 8 - Prob. JMCh. 8 - Prob. KMCh. 8 - Prob. LMCh. 8 - Prob. MMCh. 8 - Prob. NMCh. 8 - Prob. OMCh. 8 - Prob. PMCh. 8 - Prob. QMCh. 8 - Prob. RMCh. 8 - Prob. SMCh. 8 - Prob. TMCh. 8 - Prob. UMCh. 8 - Prob. VMCh. 8 - Prob. WMCh. 8 - Prob. XMCh. 8 - Prob. YMCh. 8 - Which of the following has a positive (+) charge?...Ch. 8 - Two equal positive charges are placed equidistant...Ch. 8 - In a dc circuit, how do electrons move? (8.2) (a)...Ch. 8 - What is a unit of voltage? (8.2) (a) joule (b)...Ch. 8 - The ohm is another name for which of the...Ch. 8 - Appliances with heating elements require which of...Ch. 8 - The greatest equivalent resistance occurs when...Ch. 8 - Prob. 8MCCh. 8 - Prob. 9MCCh. 8 - Prob. 10MCCh. 8 - What type of energy conversion does a motor...Ch. 8 - What type of energy conversion does a generator...Ch. 8 - Prob. 13MCCh. 8 - A transformer with more windings on the primary...Ch. 8 - Prob. 1FIBCh. 8 - ___ are neither good conductors nor good...Ch. 8 - Prob. 3FIBCh. 8 - Voltage is defined as work per___. (8.2)Ch. 8 - An electric circuit that is not a complete path is...Ch. 8 - Prob. 6FIBCh. 8 - Prob. 7FIBCh. 8 - Prob. 8FIBCh. 8 - Prob. 9FIBCh. 8 - Prob. 10FIBCh. 8 - Prob. 11FIBCh. 8 - Prob. 12FIBCh. 8 - Prob. 1SACh. 8 - A large charge +Q and a small charge q are a short...Ch. 8 - Explain how a charged rubber comb attracts bits of...Ch. 8 - Why do clothes sometimes stick together when...Ch. 8 - Prob. 5SACh. 8 - Prob. 6SACh. 8 - Prob. 7SACh. 8 - If the drift velocity in a conductor is so small,...Ch. 8 - Prob. 9SACh. 8 - Why are home appliances connected in parallel...Ch. 8 - Compare the safety features of (a) fuses, (b)...Ch. 8 - Prob. 12SACh. 8 - Sometimes resistances in a circuit are described...Ch. 8 - Why do iron filings show magnetic field patterns?Ch. 8 - Compare the law of charges and the law of poles.Ch. 8 - Prob. 16SACh. 8 - What is the principle of an electromagnet?Ch. 8 - (a) What does the Earths magnetic field resemble,...Ch. 8 - Describe the basic principle of a dc electric...Ch. 8 - What happens (a) when a proton moves parallel to a...Ch. 8 - Prob. 21SACh. 8 - Prob. 22SACh. 8 - Prob. 23SACh. 8 - Body injury from electricity depends on the...Ch. 8 - Prob. 1VCCh. 8 - Prob. 1AYKCh. 8 - Prob. 2AYKCh. 8 - Answer both parts of Question 2 for a charge of +1...Ch. 8 - An old saying about electrical safety states that...Ch. 8 - Prob. 5AYKCh. 8 - Prob. 6AYKCh. 8 - Prob. 7AYKCh. 8 - Suppose you are on an expedition to locate the...Ch. 8 - How many electrons make up one coulomb of charge?...Ch. 8 - An object has one million more electrons than...Ch. 8 - What are the forces on two charges of +0.60 C and...Ch. 8 - Find the force of electrical attraction between a...Ch. 8 - There is a net passage of 4.8 1018 electrons by a...Ch. 8 - A current of 1.50 A flows in a conductor for 6.5...Ch. 8 - To separate a 0.25-C charge from another charge,...Ch. 8 - Prob. 8ECh. 8 - If an electrical component with a resistance of 50...Ch. 8 - What battery voltage is necessary to supply 0.50 A...Ch. 8 - A car radio draws 0.25 A of current in the autos...Ch. 8 - A flashlight uses batteries that add up to 3.0 V...Ch. 8 - How much does it cost to run a 1500-W hair dryer...Ch. 8 - Prob. 14ECh. 8 - A 24- component is connected to a 12-V battery....Ch. 8 - Prob. 16ECh. 8 - The heating element of an iron operates at 110 V...Ch. 8 - A 100-W light bulb is turned on. It has an...Ch. 8 - Two resistors with values of 25 and 35 ,...Ch. 8 - Prob. 20ECh. 8 - A student in the laboratory connects a 10-...Ch. 8 - Prob. 22ECh. 8 - A 30.0- resistor and a 60.0- resistor in series...Ch. 8 - A 30.0- resistor and a 60.0- resistor in parallel...Ch. 8 - Prob. 25ECh. 8 - A transformer has 600 turns on its primary and 200...Ch. 8 - A transformer with 1000 turns in its primary coil...Ch. 8 - A power company transmits current through a...
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 immediate cause of many deaths is ventricular fibrillation, an uncoordinated quivering of the heart, as opposed to proper beating. An electric shock to the chest can cause momentary paralysis of the heart muscle, after which the heart will sometimes start organized beating again. A defibrillator is a device that applies a strong electric shock to the chest over a time of a few milliseconds. The device contains a capacitor of a few microfarads, charged to several thousand volts. Electrodes called paddles, about 8 cm across and coated with conducting paste, are held against the chest on both sides of the heart. Their handles are insulated to prevent injury to the operator, who calls Clear! and pushes a button on one paddle to discharge the capacitor through the patient's chest Assume an energy of 3.00 102 W s is to be delivered from a 30.0-F capacitor. To what potential difference must it be charged?arrow_forwardA jet develops a 0.9 V potential difference between the tips of its wings when flying above a region of the earth where the earth's magnetic field points essentially vertically upward and has a strength of about 39 T (10-6 T). If the jet's wingspan is 35 m, what is its speed? Give your answer in km/s.arrow_forwardA circuit is made with a resistor of resistance 25 ohms and a movable bar with length 15 cm moving to the left with speed 8 m/s. The whole circuit is in a magnetic field B = 1.5 T (into page). Use this set up to answer the following questions. What is the current through the resistor in amps? Answer to 3 decimal places.arrow_forward
- A mass spectrometer is being used to separate common oxygen-16 from the much rarer oxygen-18, taken from a sample of old glacial ice. (The relative abundance of these isotopes is related to the climatic temperature at the time the ice was deposited.) The ratio of the masses of these two ions is 16 to 18, the mass of oxygen-16 is 2.66x10-26 kg, and they are singly charged ions. The ions travel at 5.00x106 m/s in a 1.20-T magnetic field. a. What is the separation between their paths when they hit the detector after traversing a semicircle path in the magnetic field? b. Which ion takes more time to traverse the semicircle path, and by how much?arrow_forwardLightning occurred in a forest and a tree standing vertically in the forest provided a path along which the lightning passed. (i) Sketch a diagram showing the electric field and equipotentials at the point on the ground where the tree is located. Suppose 600×10−3 C of charge is conducted through the tree in 1.0 µs (ii) Calculate the average current. (iii) Sketch the temporary magnetic field created by this current. (iv) What will the magnetic field strength be 10 cm from the tree?arrow_forwardA very tall cylindrical transformer in a power station has a radius of 0.48 m and carries a uniform surface charge of -0.45 microcoulombs per square meter. At what distance for the centre of the cylinder does the magnitude of the electric field drop to 3550 V/m? Approximate the cylinder as infinitely tall. Answer in meters. Question 1 options: A) 6.88E+00 B) 6.88E+06 C) 2.62E+00 D) 1.82E+00 E) 3.30E+00 F) 3.30E+06 G) 1.82E+03 H) The field is never that strong.arrow_forward
- A circuit is made with a resistor of resistance 25 ohms and a movable bar with length 15 cm moving to the left with speed 8 m/s. The whole circuit is in a magnetic field B = 1.5 T (into page). Use this set up to answer the following questions. What is the magnitude of the power delivered to the bar by the force pushing it in watts? Answer to 4 decimal places.arrow_forwardThe capacitor in the circuit shown below is initially uncharged. The switch is closed at t = 0 s. ΔVbattery = 30 V, C = 3.0 F, and R = 2.0 Ω. At sometime after the switch is closed, the current in the circuit is measured to be 6.1 A. What is the charge on the capacitor at this time, in Coulomb?arrow_forwardA surgeon is attempting to measure the speed of blood flow in an aorta (a blood vessel) prior to surgery. The surgeon applies a 2.33 Tesla B-field perpendicular to the flow of blood. A little while later they measure the potential difference across the walls of the aorta and then estimate from that measurement that the blood is flowing at 90 cm/s. Suppose that the aorta has a radius of 1.32 cm. What potential difference (in Volts) did the surgeon notice (measure) to make the above speed estimation? Potential difference across the aorta = I Varrow_forward
- A hollow cylinder is shown in this figure. When the potential difference (AV = 12 V) is applied between the inner (a) and outer (b) surfaces, find the electric current (I), if a 1 cm, b = 2 cm, L= 1 m, Pcopper = 1.7x 10 Q. m, and 7 = 3.14. A) 3.86 nA B) 4.98 nA C) 5.75 nA D) 6.42 nA E) 8.12 nAarrow_forwardAn accelerating voltage of 2.36 x 10³ V is applied to an electron gun, producing a beam of electrons originally traveling horizontally north in vacuum toward the center of a viewing screen 37.9 cm away. (a) What is the magnitude of the deflection on the screen caused by the Earth's gravitational field? (b) What is the direction of the deflection on the screen caused by the Earth's gravitational field? up down east west (c) What is the magnitude of the deflection on the screen caused by the vertical component of the Earth's magnetic field, taken as 20.0 μT down? east m (d) What is the direction of the deflection on the screen caused by the vertical component of the Earth's magnetic field, taken as 20.0 µT down? north south west mm (e) Does an electron in this vertical magnetic field move as a projectile, with constant vector acceleration perpendicular to a constant northward component of velocity? Yes No O No (f) Is it a good approximation to assume it has this projectile motion? Yes…arrow_forwardA circuit is made with a resistor of resistance 25 ohms and a movable bar with length 15 cm moving to the left with speed 8 m/s. The whole circuit is in a magnetic field B = 1.5 T (into page). Use this set up to answer the following questions. What is the magnetic force on the bar in Newtons? Answer to 4 decimal places.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage LearningGlencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-HillCollege PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Glencoe Physics: Principles and Problems, Student...
Physics
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Glencoe/McGraw-Hill
College Physics
Physics
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
Electric Fields: Crash Course Physics #26; Author: CrashCourse;https://www.youtube.com/watch?v=mdulzEfQXDE;License: Standard YouTube License, CC-BY