College Physics: A Strategic Approach (4th Edition)
4th Edition
ISBN: 9780134704180
Author: Knight
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 22, Problem 22MCQ
Lightbulbs are typically rated by their power dissipation when operated at a given voltage. Which of the following lightbulbs has the largest current through it when operated at the voltage for which it’s rated?
A 0.8 W, 1.5 V
B. 6W, 3V
C. 4 W, 4.5 V
D. 8W, 6 V
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Lightbulbs are typically rated by their power dissipation when operated at a given voltage. Which of the following lightbulbs has the largest current through it when operated at the voltage for which it’s rated?A. 0.8 W, 1.5 V B. 6 W, 3 VC. 4 W, 4.5 V D. 8 W, 6 V
The current through a 10Ω resistor is 0.025A. What is the voltage drop across the resistor?
a. 2.5mV
b. 0.25V
c. 2.5V
d. 0.25mV
If connected to a 3 V potential difference, a certain resistor dissipates 0.5 W. How much energy would the resistor dissipate if it is connected to a 1 V potential difference?
A. 0.056 W.
B. 0.167 W.
C. 0.5 W.
D. 1.5 W.
E. Cannot be determined.
Chapter 22 Solutions
College Physics: A Strategic Approach (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
73. You know that a sharp knife cuts better than a dull knife. Do you know why this is so? Defend your answer.
Conceptual Physical Science (6th Edition)
Choose the best answer to each of the following. Explain your reasoning. What predicted the existence of gravit...
Cosmic Perspective Fundamentals
Choose the best answer to each of the following. Explain your reasoning. Which objects have the most elliptical...
The Cosmic Perspective Fundamentals (2nd Edition)
Use your knowledge of the velocities and changes in velocities to construct momentum vectors and change in mome...
Tutorials in Introductory Physics
75. A thin 50.0-cm-long metal bar with mass 750 g rests on, but is not attached to, two metal supports in a uni...
College Physics (10th Edition)
At the instant shown in Figure 1, which direction is the star moving (circle one)?
Lecture- Tutorials for Introductory Astronomy
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 12.0-V emf automobile battery has a terminal voltage of 16.0 V when being charged by a current of 10.0 A. (a) What is the battery’s internal resistance? (b) What power is dissipated inside the battery? (c) At what rate (in °C/min ) will its temperature increase if its mass is 20.0 kg and it has a specific heat of 0.300 kcal/kg • °C, assuming no heat escapes?arrow_forwardA 20.00-V battery is used to supply current to a 10-k resistor. Assume the voltage drop across any wires used for connections is negligible, (a) What is the current through the resistor? (b) What is the power dissipated by the resistor? (c) What is the power input from the battery; assuming all the electrical power is dissipated by the resistor? (d) What happens to the energy dissipated by the resistor?arrow_forwardA lightbulb is connected to a variable power supply. As the potential across the bulb is varied, the resulting current and the filaments temperature are measured. The data are listed in Table P28.38. a. Find R for each entry in Table P28.38, and then plot R as a function of T. b. Assume that room temperature is at 293 K. Find R0 (resistance at room temperature). Comment on your result.arrow_forward
- What is the maximum power that can be consumed by any combination of the 6.0 Ω and 9.0Ω resistors feeding it with a potential of 18 V? a.22 W b.71 W c.90 W d.54 W e.80 Warrow_forwardA 4.0- resistor has a current of 3.0 A in it for 5.0 min. How many electrons pass through the resistor during this time interval?arrow_forwardA heart defibrillator is used to enable the heart to start beating if it has stopped. This is done by passing a large current of 12 A through the body at 25 V for a very short time, usually about 3 millisecond. How much energy is transferred from the defibrillator to the body?arrow_forward
- A copper wire with AWG18 (generally used in wires connecting lamps) has a nominal diameter of 1.02 mm. This wire is connected to a 200 W lamp and carries a current of 1.67 A. The density of free electrons is ?, ? × ????electrons per cubic meter. Calculate the modules (a) current density; (b) drag speed; (c) convert the drag speed to m / h.arrow_forwardTwo ideal batteries: V1 of potential 27.02V and V2 of potential 5.89V provide power to the following circuit. If R1 has a resistance of 3.46Ω, R2 has a resistance of 6.04Ω and R3 has a resistance of 2.44Ω. What is the current through R2?arrow_forwardA heart defibrillator is used to enable the heart to start beating if it has stopped. This is done by passing a large current of 12 A through the body at 25 V for a very short time, usually about 3 milliseconds. How much energy is transferred from the defibrillator to the body?arrow_forward
- A 5.00 V power supply provides a maximum current of 9.50 A. HINT (a) Calculate the maximum power delivered (in W) by the power supply. W (b) How many 2.07 W cell phone chargers could be powered by the power supply? Include fractional numbers in your answer. chargersarrow_forwardWhat is the power rating of a stove that receives 12.5 A of current and requires 150 V to function? a. 12 W b. 1.9 x 10³J c. 12 J d. 1.9 x 10³ W e. 150 Warrow_forwardA 5.00 V power supply provides a maximum current of 11.5 A. (a) Calculate the maximum power delivered (in W) by the power supply. W (b) How many 2.32 W cell phone chargers could be powered by the power supply? Include fractional numbers in your answer. chargersarrow_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 LearningPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
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