College Physics (10th Edition)
10th Edition
ISBN: 9780321902788
Author: Hugh D. Young, Philip W. Adams, Raymond Joseph Chastain
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
thumb_up100%
Chapter 19, Problem 30P
Power rating of a resistor. The power rating of a resistor is the maximum power it can safety dissipate without being damaged by overheating. (a) If the power rating of a certain 15 kΩ resistor is 5.0 W, what is the maximum current it car carry without damage? What is the greatest allowable potential deference across the terminals of this resistor? (b) If a 9.0 kΩ resistor is to be connected across a 120 V potential difference, what power rating is required for that resistor?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
The power rating of a resistor is the maximum power it can safely dissipate without being damaged by overheating. If the power rating of a certain 17 kΩ resistor is 5.0 W, what is the maximum current it can carry without damage?What is the greatest allowable potential difference across the terminals of the resistor?
AR = 40 N resistor has a power rating of 10 W. This means that if the electrical power deliv-
%3D
ered to this resistor exceeds 10 J/s, the resistor will burn up and be destroyed.
(a) Determine the maximum potential difference that can be applied across this resistor.
(b) Determine the maximum current that can be safely sent through this resistor.
(c) Such a resistor that burns up is known as a fuse. Any fuse always carries a rating label on it and
electricians always know the rating of a fuse before using it. Determine the rating label on this fuse.
A
9:19 AM
P Type here to search
9396
93%
4/5/2021
ダー
F10
***
Prise
Insert
Delete
F3
FS
F7
FO
F11
F12
23
&
Backspace
4
8
%3D
E
R
T
Y
U
PI
D
11
F
C
B
N
A PgU-
Alt
Alt
Ctrl
Home
V
An unknown resistor is connected between the terminalsof a 3.00 V battery. Energy is dissipated in the resistorat the rate of 0.540 W. The same resistor is then connectedbetween the terminals of a 1.50 V battery. At what rate is energynow dissipated?
Chapter 19 Solutions
College Physics (10th Edition)
Ch. 19 - You create a circuit with three resistors and a...Ch. 19 - The energy that can be extracted from a storage...Ch. 19 - A cylindrical rod has resistivity p. If we triple...Ch. 19 - True or false? (a) Adding more resistance to a...Ch. 19 - Why does the resistance of an object increase with...Ch. 19 - How does a capacitor store energy? Can a resistor...Ch. 19 - High-voltage power supplies are sometimes designed...Ch. 19 - If you charge a capacitor through an R-C circuit,...Ch. 19 - Can all combinations of resistors be reduced to...Ch. 19 - In a two-cell flashlight, the batteries are...
Ch. 19 - You connect a number of identical light bulbs to a...Ch. 19 - When you scuff your shoes across a nylon carpet,...Ch. 19 - A cylindrical metal rod has a resistance R. If...Ch. 19 - A resistor R and another resistor 2R are connected...Ch. 19 - Which statements about the circuit shown in Figure...Ch. 19 - When the switch in Figure 19.40 is closed, the...Ch. 19 - Three identical light bulbs are connected in the...Ch. 19 - You connect three resistors with resistances R,...Ch. 19 - In the circuit shown in Figure 19.42, resistor A...Ch. 19 - In which of the two circuits shown in Figure 19.43...Ch. 19 - The battery shown in the circuit in Figure 19.44...Ch. 19 - A battery with no internal resistance is connected...Ch. 19 - The battery shown in the circuit in Figure 19.46...Ch. 19 - Three identical light bulbs. A, B, and C, are...Ch. 19 - A 5.0 A current flows through the leads of an...Ch. 19 - Lightning strikes. During lightning strikes from a...Ch. 19 - Transmission of nerve impulses. Nerve cells...Ch. 19 - In an ionic solution, a current consists of Ca2+...Ch. 19 - A 14 gauge copper wire of diameter 1.628 mm...Ch. 19 - You want to precut a set of 1.00 strips of 14...Ch. 19 - Prob. 7PCh. 19 - A tightly coiled spring having 75 coils, each 3.50...Ch. 19 - Prob. 9PCh. 19 - Prob. 10PCh. 19 - A steel wire of length L and radius r1 has a...Ch. 19 - Prob. 12PCh. 19 - Prob. 13PCh. 19 - A 1.50 m cylindrical rod of diameter 0.500 cm is...Ch. 19 - Prob. 15PCh. 19 - In a laboratory experiment, you vary the current...Ch. 19 - The following measurements of current and...Ch. 19 - Prob. 18PCh. 19 - Current in the body. The resistance of the body...Ch. 19 - A copper transmission cable 100 km long and 10.0...Ch. 19 - Prob. 21PCh. 19 - A steel wire, of length L and diameter D, has a...Ch. 19 - A 6.00 V lantern battery is connected to a 10.5 ...Ch. 19 - When the switch in Figure 19.49 is open, the...Ch. 19 - A non-ideal 10.0 V battery is connected across a...Ch. 19 - Prob. 26PCh. 19 - An automobile starter motor is connected to a 12.0...Ch. 19 - Consider the circuit shown in Figure 19.50. The...Ch. 19 - Prob. 29PCh. 19 - Power rating of a resistor. The power rating of a...Ch. 19 - An idealized voltmeter is connected across the...Ch. 19 - Treatment of heart failure. A heart defibrillator...Ch. 19 - Light bulbs. The wattage rating of a light bulb is...Ch. 19 - Electrical safety. This procedure is not...Ch. 19 - Electric eels. Electric eels generate electric...Ch. 19 - A 500 and a 200 resistor are connected in series...Ch. 19 - The battery for a certain cell phone is rated at...Ch. 19 - For the circuit in Figure 19.51, find (a) the rate...Ch. 19 - A 240 W electric heater is designed to operate...Ch. 19 - Find the equivalent resistance of each combination...Ch. 19 - Calculate the (a) maximum and (b) minimum values...Ch. 19 - Each of two identical uniform metal bars has a...Ch. 19 - A 40.0 resistor and a 90.0 resistor are...Ch. 19 - Three resistors having resistances of 1.60 , 2.40...Ch. 19 - Now the three resistors of the previous problem...Ch. 19 - Compote the equivalent resistance of the network...Ch. 19 - Compute me equivalent resistance of me network in...Ch. 19 - Light bulbs in aeries. I he power rating or o...Ch. 19 - Prob. 49PCh. 19 - The batteries shown in the circuit in Figure 19.50...Ch. 19 - Find the emfs 1 and 2 in the circuit shown in...Ch. 19 - For the circuit shown in Figure 19.58, calculate...Ch. 19 - In the circuit shown in Figure 19.59, find (a) the...Ch. 19 - In the circuit shown in Figure 19.60, current...Ch. 19 - In the circuit shown in Figure 19.61, the 6.0 ...Ch. 19 - A 500.0 resistor is connected in series with a...Ch. 19 - A fully charged 6.0 F capacitor is connected in...Ch. 19 - A 12.4 F capacitor is connected through a 0.895 M...Ch. 19 - A 6.00 F capacitor that is initially uncharged is...Ch. 19 - A capacitor is charged to a potential of 12.0 V...Ch. 19 - A 1.0 F capacitor is being charged by a 9.0 V...Ch. 19 - In the circuit shown in Figure 19.62. the...Ch. 19 - Charging and discharging a capacitor. A 1.50 F...Ch. 19 - Graphing the charge on a capacitor as a function...Ch. 19 - The circuit shown in Figure 19.63 contains two...Ch. 19 - If an ohmmeter is connected between points a and b...Ch. 19 - A refrigerator draws 3.5 A of current while...Ch. 19 - A toaster using a NichromeTM heating element...Ch. 19 - A piece of wire has a resistance R. It is cut into...Ch. 19 - Flashlight batteries. A typical small flashlight...Ch. 19 - In the circuit of Figure 19.65. find (a) the...Ch. 19 - Struck by lightning. Lightning strikes can involve...Ch. 19 - Each of the three resistors m Figure 19.66 has a...Ch. 19 - Energy use of homo appliances. An 1800 W toaster,...Ch. 19 - Two identical 1.00 wires are lad side by side aid...Ch. 19 - Three identical resistors are connected in series....Ch. 19 - (a) Calculate the equivalent resistance of the...Ch. 19 - A power plant transmits 150 kW of power to a...Ch. 19 - What must the emf in Figure 19.69e be in order...Ch. 19 - For the circuit shown in Figuro 19.70. if a...Ch. 19 - A 4600 resistor is connected across a charged...Ch. 19 - A capacitor that is initially uncharged is...Ch. 19 - In the circuit shown in Figure 10.71. R it a...Ch. 19 - Spiderweb conductivity. Some types of spiders...Ch. 19 - If the conductivity of the thread results from the...Ch. 19 - Prob. 86PPCh. 19 - In another experiment, a piece of the web is...Ch. 19 - Nerve cells and R - C circuits. The portion of a...Ch. 19 - In a simple model of an axon conducting a nerve...Ch. 19 - Nerve cells and R-C circuits. The portion of a...
Additional Science Textbook Solutions
Find more solutions based on key concepts
The pV-diagram of the Carnot cycle.
Sears And Zemansky's University Physics With Modern Physics
Choose the best answer to each of the following. Explain your reasoning. Which reason of the early universe was...
Cosmic Perspective Fundamentals
Calculate the average volume per molecule for an ideal gas at room temperature and atmospheric pressure. Then t...
An Introduction to Thermal Physics
16.43 Two organ pipes, open at one end but closed at the other, are each 1.14 m long. One is now lengthened by ...
University Physics with Modern Physics (14th Edition)
The speed of the person sitting on the chair relative to the chair and relative to Earth.
Conceptual Physics (12th Edition)
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 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_forwardResistors are commonly rated at 18W,14W,12W ,1 W and 2 W for use in electrical circuits. If a current of1 = 2.00 A is accidentally passed through a R=1.00 resistor rated at 1 W, what would be the most probable outcome? Is there anything that can be done to prevent such an accident?arrow_forwardSemi-truck or trucks use four large 12-V batteries. The starter systemrequires 24 V, while normal operation of the truck’s other electrical components utilizes 12 V. How could the four batteries be connected to produce 24 V? To produce 12 V? Why is 24 V better than 12 V for starting the truck’s engine (a very heavy load)?arrow_forward
- Currents of approximately 0.06 A can be potentially fatal. Currents in that range can make the heart fibrillate (beat in an uncontrolled manner). The resistance of a dry human body can be approximately 100 k . (a) What voltage can cause 0.06 A through a dry human body? (b) When a human body is wet, the resistance can fall to 100 . What voltage can cause harm to a wet body?arrow_forwardA 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_forwardWhen does an incandescent lightbulb carry more current? (a) immediately after it is turned on and the glow of the metal filament is increasing or (b) after it has been on for a few milliseconds and the glow is steady?arrow_forward
- If the terminals of a battery with zero internal resistance are connected across two identical resistors in series, the total power delivered by the battery is 8.00 W. If the same battery is connected across the same resistors in parallel, what is the total power delivered by the battery? (a) 16.0 W (b) 32.0 W (c) 2.00 W (d) 4.00 W (e) none of those answersarrow_forward(a) Find the current in each resistor of Figure P18.18 by using the rules for resistors in series and parallel. (b) Write three independent equations for the three currents using Kirchhoffs laws: one with the node rule; a second using the loop rule through the battery, the 6.0- resistor, and the 24.0- resistor; and the third using the loop rule through the 12.0- and 24.0- resistors. Solve to check the answers found in part (a). Figure Pl8.18arrow_forwardReview. When a straight wire is warmed, its resistance is given by R = R0,[1 + a(T T0)] according to Equation 27.20, where a is the temperature coefficient of resistivity. This expression needs to be modified if we include the change in dimensions of the wire due to thermal expansion. For a copper wire of radius 0.100 0 mm and length 2.000 m, find its resistance at 100.0C, including the effects of both thermal expansion and temperature variation of resistivity. Assume the coefficients are known to four significant figures.arrow_forward
- The student engineer of a campus radio station wishes to verify the effectiveness of the lightning rod on the antenna mast (Fig. P21.71). The unknown resistance Rx is between points C and E. Point E is a true ground, but it is inaccessible for direct measurement because this stratum is several meters below the Earths surface. Two identical rods are driven into the ground at A and B, introducing an unknown resistance Ry. The procedure is as follows. Measure resistance R1 between points A and B, then connect A and B with a heavy conducting wire and measure resistance R2 between points A and C. (a) Derive an equation for Rx in terms of the observable resistances, R1 and R2. (b) A satisfactory ground resistance would be Rx 2.00 . Is the grounding of the station adequate if measurements give R1 = 13.0 and R2 = 6.00 ? Explain. Figure P21.71arrow_forwardIf you were to design an electric heater using Nichrome wire as the heating element, what parameters of the wire could you vary to meet a specific power output such as 1 000 W?arrow_forwardA 0.900-V potential difference is maintained across a 1.50-m length of tungsten wire that has a cross-sectional area of 0.600 mm2. What is the current in the wire?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
College PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
College PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher: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
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: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:OpenStax College
DC Series circuits explained - The basics working principle; Author: The Engineering Mindset;https://www.youtube.com/watch?v=VV6tZ3Aqfuc;License: Standard YouTube License, CC-BY