College Physics: A Strategic Approach, Books a la Carte Edition (4th Edition)
4th Edition
ISBN: 9780134700502
Author: Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 22, Problem 24MCQ
A copper wire is stretched so that its length increases and its diameter decreases. As a result,
A. The wire’s resistance decreases, but its resistivity stays the same.
B. The wire’s resistivity decreases, but its resistance stays the same.
C. The wire’s resistance increases, but its resistivity stays the same.
D. The wire’s resistivity increases, but its resistance stays the same.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A copper wire is stretched so that its length increases and its diameter decreases. As a result,A. The wire’s resistance decreases, but its resistivity stays the same.B. The wire’s resistivity decreases, but its resistance stays the same.C. The wire’s resistance increases, but its resistivity stays the same.D. The wire’s resistivity increases, but its resistance stays the same.
C1. There are two wires, one is made of copper and the other one is silver. These two wires of the same length are made, one from each of the materials. Is it possible for each wire to have the same resistance?a. Yes, because the two wires have the same length.b. Yes, because copper and silver have the different resistivity.c. No, because the two wires have the same length.d. No, because copper and silver have the different resistivity.
C2. A flashlight requires two 1.5-volt batteries for it to light. The current that flows through it is equivalent to 0.15 A. In an hour of operation, how much charge flows in the system?
a. 520 C
b. 540 C
c. 560 C
d. 580 C
Which of the following statements about resistance for a length of conductor is NOT correct?
a. The larger the cross section area, the lower the resistance of the conductor.
b. The larger the cross-section area, the higher the resistance of the conductor.
c. The longer the conductor, the higher the resistance of the conductor.
d. The lower the resistivity of the material, the lower the resistance of the conductor.
Chapter 22 Solutions
College Physics: A Strategic Approach, Books a la Carte Edition (4th Edition)
Ch. 22 - Prob. 2CQCh. 22 - Prob. 3CQCh. 22 - Prob. 4CQCh. 22 - All wires in Figure Q22.519 are made of the same...Ch. 22 - A wire carries a 4 A current. What is the current...Ch. 22 - Prob. 7CQCh. 22 - Cells in the nervous system have a potential...Ch. 22 - a. Which directionclockwise or...Ch. 22 - Prob. 10CQCh. 22 - Prob. 11CQ
Ch. 22 - The two circuits in Figure Q22.12 use identical...Ch. 22 - The two circuits in Figure Q22.13 use identical...Ch. 22 - Prob. 14CQCh. 22 - Rank in order, from largest to smallest, the...Ch. 22 - The circuit in Figure Q22.16 has three batteries...Ch. 22 - Prob. 17CQCh. 22 - Prob. 18CQCh. 22 - Over time, atoms boil off the hot filament in an...Ch. 22 - Prob. 20CQCh. 22 - A 100 W lightbulb is brighter than a 60 W...Ch. 22 - Lightbulbs are typically rated by their power...Ch. 22 - Lightbulbs are typically rated by their power...Ch. 22 - A copper wire is stretched so that its length...Ch. 22 - The potential difference across a length of wire...Ch. 22 - Prob. 26MCQCh. 22 - A resistor connected to a 3.0 V battery dissipates...Ch. 22 - If a 1.5 V battery stores 5.0 kJ of energy (a...Ch. 22 - Figure Q22.29 shows a side view of a wire of...Ch. 22 - A person gains weight by adding fatand therefore...Ch. 22 - Prob. 31MCQCh. 22 - The current in an electric hair dryer is 10 A. How...Ch. 22 - Prob. 2PCh. 22 - Three wires meet at a junction. Wire 1 has a...Ch. 22 - When a nerve cell depolarizes, charge is...Ch. 22 - A wire carries a 15 A current. How many electrons...Ch. 22 - In a typical lightning strike, 2.5 C flows from...Ch. 22 - Prob. 7PCh. 22 - In an ionic solution, 5.0 1015 positive ions with...Ch. 22 - Prob. 9PCh. 22 - What are the values of currents IB and IC in...Ch. 22 - The currents through several segments of a wire...Ch. 22 - How much electric potential energy does 1.0 C of...Ch. 22 - What is the emf of a battery that increases the...Ch. 22 - A 9.0 V battery supplies a 2.5 mA current to a...Ch. 22 - Prob. 16PCh. 22 - An electric catfish can generate a significant...Ch. 22 - A Wire with resistance R is connected to the...Ch. 22 - Wires 1 and 2 are made of the same metal. Wire 2...Ch. 22 - Prob. 20PCh. 22 - Resistivity measurements on the leaves of corn...Ch. 22 - Prob. 22PCh. 22 - A motorcyclist is making an electric vest that,...Ch. 22 - Prob. 24PCh. 22 - A 3.0 V potential difference is applied between...Ch. 22 - Prob. 26PCh. 22 - Prob. 27PCh. 22 - Prob. 28PCh. 22 - Figure P22.29 shows the...Ch. 22 - Figure P22.30 is a...Ch. 22 - In Example 22.6 the length of a 60 W, 240 ...Ch. 22 - The electric field inside a 30-cm-long copper wire...Ch. 22 - A copper wire is 1.0 mm in diameter and carries a...Ch. 22 - Two identical lightbulbs are connected in series...Ch. 22 - Prob. 35PCh. 22 - a. What is the resistance of a 1500 W (120 V) hair...Ch. 22 - Prob. 37PCh. 22 - A 70 W electric blanket runs at 18 V. a. What is...Ch. 22 - A 60-cm-long heating wire is connected to a 120 V...Ch. 22 - An electric eel develops a potential difference of...Ch. 22 - Prob. 41PCh. 22 - A 3.0 V battery powers a flashlight bulb that has...Ch. 22 - A heating element in a toaster dissipates 900 W...Ch. 22 - Prob. 44GPCh. 22 - Prob. 45GPCh. 22 - The hot dog cooker described in the chapter heats...Ch. 22 - Air isnt a perfect electric insulator, but it has...Ch. 22 - The biochemistry that takes place inside cells...Ch. 22 - High-resolution measurements have shown that an...Ch. 22 - When an ion channel opens in a cell wall (see...Ch. 22 - The total charge a battery can supply is rated in...Ch. 22 - Prob. 52GPCh. 22 - The heating element of a simple heater consists of...Ch. 22 - Variations in the resistivity of blood can give...Ch. 22 - A 40 W (120 V) lightbulb has a tungsten filament...Ch. 22 - Prob. 56GPCh. 22 - When the starter motor on a car is engaged, there...Ch. 22 - Prob. 58GPCh. 22 - The two segments of the wire in Figure P22.59 have...Ch. 22 - Prob. 60GPCh. 22 - Prob. 61GPCh. 22 - Prob. 62GPCh. 22 - Prob. 63GPCh. 22 - Prob. 64GPCh. 22 - An immersion heater used to boil water for a...Ch. 22 - The graph in Figure P22.66 shows the current...Ch. 22 - Its possible to estimate the percentage of fat in...Ch. 22 - If you touch the two terminals of a power supply...Ch. 22 - The average resistivity of the human body (apart...Ch. 22 - MCAT-Style Passage Problems Lightbulb Failure...Ch. 22 - MCAT-Style Passage Problems Lightbulb Failure...Ch. 22 - MCAT-Style Passage Problems Lightbulb Failure...Ch. 22 - MCAT-Style Passage Problems Lightbulb Failure...
Additional Science Textbook Solutions
Find more solutions based on key concepts
Using the definitions in Eqs. 1.1 and 1.4, and appropriate diagrams, show that the dot product and cross produc...
Introduction to Electrodynamics
Q36.19 Ordinary photographic film reverses black and white, in the sense that the most brightly illuminated are...
University Physics (14th Edition)
8. * A cart of mass m moving right collides with an identical cart moving right at half the speed. The carts st...
College Physics
Impact Energy. Consider a comet about 2 kilometers across with a mass of 4 × 1012 kg. Assume that it crashes in...
Life in the Universe (4th Edition)
Explain all answers clearly, with complete sentences and proper essay structure if needed. An asterisk (*) desi...
The Cosmic Perspective Fundamentals (2nd Edition)
Use the definition of acceleration to draw a vector in the space at right that represents the acceleration of t...
Tutorials in Introductory Physics
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) Digital medical thermometers determine temperature by measuring the resistance of a semiconductor device called a thermistor (which has a= - 0.0600/°C ) when it is at the same temperature as the patient. What is a patient's temperature if the thermistor’s resistance at that temperature is 82.0% of its value at 37.0°C (normal body temperature)? (b) The negative value for a may not be maintained for very low temperatures. Discuss why and whether this is the case here. (Hint: Resistance can’t become negative.)arrow_forwardJames states that the resistance of a copper wire can be increased making it narrower and longer. Andrew disagrees and argues that resistance can be increased by heating the wire. Which one, if either, is correct, and why? a. James, because the conductivity of a copper wire does not increase when it is hammered. b. Andrew, because the conductivity of the wire decreases when it is heated. c. None of these options d. Andrew, because the conductivity of the wire increases when it is heated. e. Both are correct because the conductivity of a conductor is independent of its shape but decreases with increase in temperature. f. James, because the conductivity of a wire is directly proportional to its area and inversely proportional to its length.arrow_forwardFor any resistor (choose the correct statement): a. Its resistivity depends only on the material that it is made of, while its resistance depends also on its shape. b. Its resistance depends only on its shape while its resistivity depends only on the material that it is made of. c. The current density flowing through it depends on its volume. d. Its conductivity depends on its current density.arrow_forward
- When the cross-sectional area of a conducting wire is doubled while its length is cut in half, the resistance of the wire will be __________ . a. three time sits original value. b. one-third of its original value. c. the same as before. d. one-fourth of its original value. e. four times its original value.arrow_forwardJairo says that you can increase the resistance of a copper wire by hammering the wire to make it narrower and longer. Ariel says its resistance can be increased by heating the wire. Which of the two is right and why? a.They are both right, because (a) and (d) are correct. b.Ariel, because the resistivity of the wire increases when it is heated. c.Ariel, because the resistivity of the wire decreases when it is heated. d.Jairo, because the conductivity of the copper wire does not decrease and could increase when hammered. e.Jairo, because the resistivity of a wire is inversely proportional to its area and directly proportional to its length.arrow_forwardFor elements that are in series with each other, which of the following statements is not only wrong, but sick and wrong? A. The larger the share of the resistance, the larger the share of the voltage. B. The current through one element is equal to the current through the other elements. C. The voltage through the first element continues undiminished through the other elements. D. The sum of voltage drops across all elements must be equal to the battery voltage. O A O B C. ODarrow_forward
- A person gains weight by adding fat—and therefore adding girth—to his body and his limbs, with the amount of muscle remaining constant. How will this affect the electrical resistance of his limbs?A. The resistance will increase.B. The resistance will stay the same.C. The resistance will decrease.arrow_forwardMultiple Choice (no explanation) 1. If both the diameter and the length of a wire are quadrupled, what will happen to its resistance? A.it doubles B.it remains the same C.it decreases to one-fourth its original value D.it increases to four times its original value 2. Wet skin is said to have much less resistance than dry skin. This explains that water is a/an? A.conductor B.insulator C.semiconductor D.superconductor 3. Which is a good practice in handling electricity? A.labeling a circuit breaker B.replacing a blown fuse with a coin C.removing the round prong in a three-prong plug D.replacing a blown fuse with one of higher amperage 4. Household circuitry is prevented from overloading by means of a? A.fuse B.switch C.three-prong plug D.ground fault interrupter 5. The flow of positive charges per unit time is called? A.alternating current B.conventional current C.direct current D.electron current 6. Which refers to a point in a circuit where three or more wires are connected?…arrow_forwardTwo pieces of copper wire have the same length, but wire A has square cross section of side s, whereas wire B has circular cross section of diameter s. Which of the following is TRUE? A. The resistivity of both wires is the same B. The resistance of both wires is the same C. The resistance of wire A is greater than B D. The resistance of wire B is greater than Aarrow_forward
- At the same temperature, two wires made of pure copper have different resistances. The same voltage is applied at the ends of each wire. The wires may differ in ( check all that apply) _ a. length _b. cross-sectional area _c. resistivity _d. amount of electric current passing through them Hint 1) The resistivity of a metallic conductor, such as copper, nearly always increases with increasing temperature. Hint 2) For an ohmic conductor, that is, a conductor such as copper that obeys Ohm's law, the resistance R is proportional to the length L and inversely proportional to the cross-sectional area A. That is, R=ρL/A where ρ ie. rho, is the resistivity of the material. Note that ρ is a characteristic of the specific material and may vary with temperature. Hint 3) Ohm's law tells us that the potential difference V between the ends of a conductor is equal to the product of the current I through the conductor and the conductor's resistance R, V=IRarrow_forward2.) Two materials have different resistivities. Two wires of the same length are made, one from each of the materials. Is it possible for each wire to have the same resistance? a. Yes, if the material with the greater resistivity is used for a thinner wire. b. Yes, if the material with the greater resistivity is used for a thicker wire. c. It is not possible. d. cannot be determinedarrow_forwardTwo resistors are arranged in series with a voltage source. A description of the voltages and currents of the two resistors is best given by a. The voltage is the same across both resistors and the current is divided. b. Both the voltages and the currents are divided between the resistors . c. Both the voltages and the currents are the same in both resistors. d. The voltage is divided between the two resistors but the current is the same.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- College PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax CollegeCollege PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
- Physics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
College Physics
Physics
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:OpenStax College
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
Physics for Scientists and Engineers, Technology ...
Physics
ISBN:9781305116399
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
Physics for Scientists and Engineers
Physics
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
How To Solve Any Resistors In Series and Parallel Combination Circuit Problems in Physics; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=eFlJy0cPbsY;License: Standard YouTube License, CC-BY