University Physics Volume 2
18th Edition
ISBN: 9781938168161
Author: OpenStax
Publisher: OpenStax
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 9, Problem 3CQ
When working with high-power electric circuits, it is advised that whenever possible, you work "one-handed” or “keep one hand in your pocket." Why is this a sensible suggestion?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
On the production floor, machinists use a table saw to create wooden forms for pouring concrete. Standard factory circuits supply 120 volts [V] and are protected by a 16-ampere [A] circuit breaker. How much power in units of horsepower [hp] can the circuit provide to the motor of the table saw?
(69%) Problem 10: In the figure, these three resistors are counected to a voltage
source so that Ry = 5.5 a and R3 = 8.5 2 are in parallel with one anotber and that
combination is in series with R = 0.75 0.
R
z = ?
12.0 V
R
R3
2
* 50% Part (a) Calculate the power being dissipated by the third resistor R3. in watts.
Grade Summary
P;-
Deductions
Potentiul
100%
Late Work %
75%%
sin()
cos()
lani)
7
OME
Late Putential
cotan()
asin)
acos()
E 4
5 6
Submissions
sinh)
23
Attempts remaining: 996
(0% per attermpt)
detailed view
atan()
acotan()
cosh()
tanh()
cotanh)
END
O Degrees C Radians
0%
VO DACKSACE
CLBAR
1
2
0%
0%
Hint
I give up
Suhmit
Feedback
When working with high-power electric circuits, it is advised that whenever possible, you work “one-handed” or “keep one hand in your pocket.” Why is this a sensible suggestion?
Chapter 9 Solutions
University Physics Volume 2
Ch. 9 - Check Your Understanding Handheld calculators...Ch. 9 - Check Your Understanding Circuit breakers in a...Ch. 9 - Check Your Understanding In Example 9.4, the drift...Ch. 9 - Check Your Understanding The current density is...Ch. 9 - Check Your Understanding Copper wires use...Ch. 9 - Check Your Understanding A strain gauge is an...Ch. 9 - Check Your Understanding The resistance between...Ch. 9 - Check Your Understanding The voltage supplied to...Ch. 9 - Check Your Understanding Electric motors have a...Ch. 9 - Check Your Understanding Is the efficiency of the...
Ch. 9 - Can a wire cany a current and still be...Ch. 9 - Car batteries are rated in ampere-hours (Ah). To...Ch. 9 - When working with high-power electric circuits, it...Ch. 9 - Incandescent light bulbs are being replaced with...Ch. 9 - It was stated that the motion of an electron...Ch. 9 - Electric circuits are sometimes explained using a...Ch. 9 - An incandescent light bulb is partially evacuated....Ch. 9 - The [R drop across a resistor means that there is...Ch. 9 - Do impurities in semiconducting materials listed...Ch. 9 - Does the resistance of an object depend on the...Ch. 9 - If aluminum and copper wires of the same length...Ch. 9 - In Determining Field from Potential, resistance...Ch. 9 - Shown below are the results of an experiment where...Ch. 9 - The current I is measured through a sample of an...Ch. 9 - Common household appliances are rated at 110 V,...Ch. 9 - Your electric bill gives your consumption in units...Ch. 9 - Resistors are commonly rated at 18W,14W,12W ,1 W...Ch. 9 - Ail immersion heater is a small appliance used to...Ch. 9 - What requirement for superconductivity7 makes...Ch. 9 - Name two applications for superconductivity listed...Ch. 9 - A Van de Graaff generator is one of the original...Ch. 9 - A cathode ray tube (CRT) is a device that produces...Ch. 9 - How many electrons flow through a point in a wire...Ch. 9 - A conductor carries a current that is decreasing...Ch. 9 - The quantity of charge through a conductor is...Ch. 9 - The current through a conductor is modeled as...Ch. 9 - The charge on a capacitor in a circuit is modeled...Ch. 9 - An aluminum wire 1.628 mm in diameter (14-gauge)...Ch. 9 - The current of an election beam has a...Ch. 9 - A high-energy proton accelerator produces a proton...Ch. 9 - Consider a wire of a circular cross-section with a...Ch. 9 - The current of an electron beam has a measured...Ch. 9 - The current supplied to an ail conditioner unit is...Ch. 9 - What current flows through the bulb of a 3.00-V...Ch. 9 - Calculate the effective resistance of a pocket...Ch. 9 - How many volts are supplied to operate an...Ch. 9 - What is the resistance of a 20.0-m-long piece of...Ch. 9 - The diameter of 0-gauge copper wire is 8.252 mm....Ch. 9 - If the 0. 10.0-mm-diameter tungsten filament in a...Ch. 9 - A lead rod has a length of 30.00 cm and a...Ch. 9 - Find the ratio of the diameter of aluminum to...Ch. 9 - What current flows through a 2.54-cm-diameter rod...Ch. 9 - (a) To what temperature must you raise a copper...Ch. 9 - A resistor made of nichrome wire is used in an...Ch. 9 - Of what material is a resistor made if its...Ch. 9 - An electronic device designed to operate at any...Ch. 9 - (a) Of what material is a wire made, if it is 25.0...Ch. 9 - Assuming a constant temperature coefficient of...Ch. 9 - A copper wire has a resistance of 0.500 at 20.0°C...Ch. 9 - A 2.2-k resistor is connected across a D cell...Ch. 9 - A resistor rated at 250 k is connected across two...Ch. 9 - A resistor is connected in series with a power...Ch. 9 - A resistor is placed in a circuit with an...Ch. 9 - The following table show the measurements of a...Ch. 9 - A 20.00-V battery is used to supply current to a...Ch. 9 - What is the maximum voltage that can be applied to...Ch. 9 - A heater is being designed that uses a coil of...Ch. 9 - An alternative to CFL bulbs and incandescent bulbs...Ch. 9 - The power dissipated by a resistor with a...Ch. 9 - Running late to catch a plane, a driver...Ch. 9 - SI. A physics student has a single-occupancy dorm...Ch. 9 - A 0.50-W, 220- resistor carries the...Ch. 9 - Consider a power plant is located 60 km away from...Ch. 9 - A wire is drawn through a die, stretching it to...Ch. 9 - Digital medical thermometers determine temperature...Ch. 9 - Electrical power generators are sometimes "load...Ch. 9 - A 12-guage gold wire has a length of 1 meter. (a)...Ch. 9 - What is the change in temperature required to...Ch. 9 - A coaxial cable consists of an inner conductor...Ch. 9 - A 10.00-meter long wire cable that is made of...Ch. 9 - A nichrome rod that is 3.00 mm long with a cross...Ch. 9 - The temperature in Philadelphia, PA can vary...Ch. 9 - When 100.0 V is applied across a 5-gauge (diameter...Ch. 9 - A wire with a resistance of 5.0 is drawn out...Ch. 9 - What is the resistivity of a wire of 5-gauge wire...Ch. 9 - Coils are often used in electrical and electronic...Ch. 9 - Currents of approximately 0.06 A can be...Ch. 9 - A 20.00-ohm; 5.00-watt resistor is placed in...Ch. 9 - A battery with an emf of 24.00 V delivers a...Ch. 9 - A 12.00-V battery has an internal resistance of a...Ch. 9 - A 10-gauge copper wire has a cross-sectional area...Ch. 9 - The current through a 12-gauge wire is given as...Ch. 9 - A particle accelerator produces a beam with a...Ch. 9 - In this chapter, most examples and problems...Ch. 9 - A current of I= 25A is drawn from a 100-V...Ch. 9 - Consider a square rod of material with sides of...Ch. 9 - A resistor of an unknown resistance is placed in...Ch. 9 - The charge that flows through a point in a wire as...Ch. 9 - Consider a resistor made from a hollow cylinder of...Ch. 9 - What is the current through a cylindrical wire of...Ch. 9 - A student uses a 100.00-W, 115.00-V radiant heater...Ch. 9 - A 12-V car battery is used to power a 20.00-W,...Ch. 9 - A physics student uses a 115.00-V immersion heater...
Additional Science Textbook Solutions
Find more solutions based on key concepts
3. What is free-fall, and why does it make you weightless? Briefly describe why astronauts are weightless in th...
The Cosmic Perspective (8th Edition)
What class of motion, natural or violent, did Aristotle attribute to motion of the Moon?
Conceptual Physics (12th Edition)
The pV-diagram of the Carnot cycle.
Sears And Zemansky's University Physics With Modern Physics
The setup depicted in Figure 4.6 is used in a diffraction experiment using X-rays of 0.26 nm wavelength. Constr...
Modern Physics
(II) A vertical spring (ignore its mass), whose spring constant is 875 N/m, is attached to a table and is compr...
Physics for Scientists and Engineers with Modern Physics
48. (II) A 5/8— in. (inside) diameter garden hose is used to fill a round swimming pool 6.1 m in diameter How l...
Physics: Principles with Applications
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_forwardYou wish to measure both the current through and the potential difference across some component of a circuit. It is not possible to do this simultaneously and accurately with ordinary voltmeters and ammeters. Explain why not.arrow_forwardConsider the electric circuit shown in the sketch, consisting of a 12.0-V battery and three capacitors connected partly inseries and partly in parallel. Find (a) the equivalent capacitance of this circuit and (b) the total energy stored in the circuit.arrow_forward
- One example of a water system is a garden hose that waters a garden. Another is the cooling system of an automobile. Which of these exhibits behavior more analogous to an electric circuit? Explain.arrow_forwardCreate an illustration of a series circuit that connects a battery and five capacitors and with a total capacitance of 3/7 F. The total charge in the circuit must be 2/9 C.arrow_forwardWe are often advised to not flick electric switches with wet hands, dry your hands first. We are also advised not to throw water on an electric fire. Why?arrow_forward
- Jio Almonte is the executive assistant in the Torralba-Santos group of companies. Because of his background in computer engineering, he has been the "go-to" guy for repairing desktop computers in the company. One day, while he was troubleshooting a co-worker's 12-volt power supply, he was electrocuted. Seeing that he forgot to wear his gloves, and he was deliberately pulled to fix it while he was washing his coffee mug, the others worried that he might not survive and immediately dialed 911. Knowing that standard power supplies run on 300 W of power, and the Philippines uses 230 V as residential voltage stated in the Philippine Electrical Code, compute for the current flowing in the power supply.arrow_forwardBased on your understanding of Ohm’s Law, electric power dissipation, and the relationship between length, cross section, and resistance; why do you think it is more efficient to operate electrical power lines at higher voltages? Can you think of any alternative methods for increasing the efficiency of power transmission?arrow_forwardCommon household appliances are rated at 110 V, but power companies deliver voltage in the kilovolt range and then step the voltage down using transformers to 110 V to be used in homes. You will learn in later chapters that transformers consist of many turns of wire, which warm up as current flows through them, wasting some of the energy that is given off as heat. This sounds inefficient. Why do the power companies transport electric power using this method?arrow_forward
- We are often advised to not flick electric switches with wet hands, dry your hand first.We are also advised to never throw water on an electric fire. Why?arrow_forwardPL (mW) For the circuit shown, the power dissipated in the load 60 Re Resistance RL, is given as a function of RL. 40 + Q 7.8 The value of resistance Rs (in 2) is: 32 N E 20 20 40 60 80 100 RL (N) 20 24 32 16 8 00arrow_forwardConsider the circuit shown in the drawing. The circuit contains a battery, several wires, two identical light bulbs, and two switches, which are initially open, so no current passes through the circuit elements. Which of the following statements is false? Assume for this question that the resistances of the two light bulbs are identical and don't change.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Glencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-HillPhysics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
Glencoe Physics: Principles and Problems, Student...
Physics
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Glencoe/McGraw-Hill
Physics for Scientists and Engineers, Technology ...
Physics
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
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