Principles of Physics: A Calculus-Based Text
5th Edition
ISBN: 9781133104261
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 21, Problem 12OQ
When operating on a 120-V circuit, an electric heater receives 1.30 × 103 W of power, a toaster receives 1.00 × 103 W, and an electric oven receives 1.54 × 103 W. If all three appliances are connected in parallel on a 120-V circuit and turned on, what is the total current drawn from an external source? (a) 24.0 A (b) 32.0 A (c) 40.0 A (d) 48.0 A (e) none of those answers
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
When connected to a 120 V source, an electric heater is rated at 1200 W and a toaster at 6.0×10 2 W. If both appliances are operating in parallel on a 120-V circuit, what total current is delivered by an external source? (a) 12 A (b) 24 A (c) 32 A (d) 8.0 A (e) 15 A
There is a 120V 40 W light bulb, which statement is INCORRECT? Why?
the rate of energy dissipation is 40 W
the current flowing through is 0.33 A
the capacitance is 3.0 Farad
the light bulb will function well when plugged into a 120 V socket
A light bulb has a resistance of 95 Ω when operating at 120 V. How much energy is given off by the light bulb after 1 day?
1.48 x 10^7 J
4.64 x 10^7 J
8.90 x 10^7 J
1.31 x 10^7 J
9.19 x 10^7 J
Chapter 21 Solutions
Principles of Physics: A Calculus-Based Text
Ch. 21.1 - Consider positive and negative charges moving...Ch. 21.2 - Prob. 21.2QQCh. 21.2 - When does an incandescent lightbulb carry more...Ch. 21.5 - For the two incandescent lightbulbs shown in...Ch. 21.7 - Prob. 21.5QQCh. 21.7 - With the switch in the circuit of Figure 21.18a...Ch. 21.7 - Prob. 21.7QQCh. 21.9 - Consider the circuit in Figure 21.29 and assume...Ch. 21 - If the terminals of a battery with zero internal...Ch. 21 - Wire B has twice the length and twice the radius...
Ch. 21 - The current-versus-voltage behavior of a certain...Ch. 21 - Prob. 4OQCh. 21 - A potential difference of 1.00 V is maintained...Ch. 21 - Prob. 6OQCh. 21 - A metal wire of resistance R is cut into three...Ch. 21 - The terminals of a battery are connected across...Ch. 21 - Prob. 9OQCh. 21 - Two conducting wires A and B of the same length...Ch. 21 - When resistors with different resistances are...Ch. 21 - When operating on a 120-V circuit, an electric...Ch. 21 - Prob. 13OQCh. 21 - Prob. 14OQCh. 21 - In the circuit shown in Figure OQ21.15, each...Ch. 21 - Prob. 1CQCh. 21 - Prob. 2CQCh. 21 - Prob. 3CQCh. 21 - Referring to Figure CQ21.4, describe what happens...Ch. 21 - When the potential difference across a certain...Ch. 21 - Use the atomic theory of matter to explain why the...Ch. 21 - Prob. 7CQCh. 21 - (a) What advantage does 120-V operation offer over...Ch. 21 - Prob. 9CQCh. 21 - Prob. 10CQCh. 21 - If you were to design an electric heater using...Ch. 21 - Prob. 12CQCh. 21 - Prob. 13CQCh. 21 - Prob. 14CQCh. 21 - Why is it possible for a bird to sit on a...Ch. 21 - Prob. 1PCh. 21 - Prob. 2PCh. 21 - The quantity of charge q (in coulombs) that has...Ch. 21 - Prob. 4PCh. 21 - Prob. 5PCh. 21 - Figure P21.6 represents a section of a conductor...Ch. 21 - Prob. 7PCh. 21 - A 0.900-V potential difference is maintained...Ch. 21 - Prob. 9PCh. 21 - A lightbulb has a resistance of 240 when...Ch. 21 - Prob. 11PCh. 21 - Prob. 12PCh. 21 - While taking photographs in Death Valley on a day...Ch. 21 - Prob. 14PCh. 21 - If the current carried by a conductor is doubled,...Ch. 21 - Prob. 16PCh. 21 - Prob. 17PCh. 21 - Prob. 18PCh. 21 - Prob. 19PCh. 21 - Prob. 20PCh. 21 - Prob. 21PCh. 21 - Prob. 22PCh. 21 - Prob. 23PCh. 21 - Prob. 24PCh. 21 - A 100-W lightbulb connected to a 120-V source...Ch. 21 - Prob. 26PCh. 21 - Prob. 27PCh. 21 - Prob. 28PCh. 21 - A toaster is rated at 600 W when connected to a...Ch. 21 - Prob. 30PCh. 21 - Prob. 31PCh. 21 - Review. A well-insulated electric water heater...Ch. 21 - A battery has an emf of 15.0 V. The terminal...Ch. 21 - Two 1.50-V batterieswith their positive terminals...Ch. 21 - An automobile battery has an emf of 12.6 V and an...Ch. 21 - Prob. 36PCh. 21 - Prob. 37PCh. 21 - Prob. 38PCh. 21 - Consider the circuit shown in Figure P21.39. Find...Ch. 21 - Four resistors are connected to a battery as shown...Ch. 21 - Three 100- resistors are connected as shown in...Ch. 21 - Prob. 42PCh. 21 - Calculate the power delivered to each resistor in...Ch. 21 - Prob. 44PCh. 21 - The ammeter shown in Figure P21.45 reads 2.00 A....Ch. 21 - Prob. 46PCh. 21 - The circuit shown in Figure P21.47 is connected...Ch. 21 - In Figure P21.47, show how to add just enough...Ch. 21 - Taking R = 1.00 k and = 250 V in Figure P21.49,...Ch. 21 - For the circuit shown in Figure P21.50, we wish to...Ch. 21 - In the circuit of Figure P21.51, determine (a) the...Ch. 21 - Jumper cables are connected from a fresh battery...Ch. 21 - Prob. 53PCh. 21 - Prob. 54PCh. 21 - Prob. 55PCh. 21 - Prob. 56PCh. 21 - In the circuit of Figure P21.57, the switch S has...Ch. 21 - Prob. 58PCh. 21 - The circuit in Figure P21.59 has been connected...Ch. 21 - Assume that global lightning on the Earth...Ch. 21 - Prob. 61PCh. 21 - Prob. 62PCh. 21 - Prob. 63PCh. 21 - Prob. 64PCh. 21 - Prob. 65PCh. 21 - An oceanographer is studying how the ion...Ch. 21 - The values of the components in a simple series RC...Ch. 21 - Prob. 68PCh. 21 - Prob. 69PCh. 21 - Prob. 70PCh. 21 - The student engineer of a campus radio station...Ch. 21 - Prob. 72PCh. 21 - A battery has an emf and internal resistance r. A...Ch. 21 - Prob. 74PCh. 21 - Prob. 75PCh. 21 - Prob. 76PCh. 21 - Prob. 77P
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
- An electric eel generates electric currents through its highly specialized Hunters organ, in which thousands of disk-shaped cells called electrocytes are lined up in series, very much in the same way batteries are lined up inside a flashlight. When activated, each electrocyte can maintain a potential difference of about 150 mV at a current of 1.0 A for about 2.0 ms. Suppose a grown electric eel has 4.0 103 electrocytes and can deliver up to 3.00 102 shocks in rapid series over about 1.0 s. (a) What maximum electrical power can an electric eel generate? (b) Approximately how much energy does it release in one shock? (c) How high would a mass of 1.0 kg have to be lifted so that its gravitational potential energy equals the energy released in 3.00 102 such shocks?arrow_forwardA 0.718 kg0.718 kg toy car is powered by four AA batteries (6.00 V total) connected directly to a small DC motor. The car has an effective energy conversion efficiency of 36.1%,36.1%, meaning that 36.1%36.1% of the electric energy applied to the motor is converted into translational kinetic energy. After 7.88 s7.88 s, the car, which is initially at rest, reaches a speed of 3.43 m/s.3.43 m/s. What is the average current supplied to the car's motor?arrow_forwardHow much current is required to transmit 1500 W down an overhead cable at a voltage of 3.0 x 10⁵ V? a. 2.0 x 10⁰ A b. 2.0 x 10² A c. 4.5 x 10⁸ A d. 5.0 x 10⁻³ A e. 5.0 x 10³ Aarrow_forward
- Assuming 89.0% efficiency for the conversion of electrical power by the motor, what current (in A) must the 12.0 V batteries of a 755 kg electric car be able to supply in order to do the following? (a) to accelerate from rest to 25.0 m/s in 1.00 min. A (b) to climb a 2.00 ✕ 102 m high hill in 2.00 min at a constant 25.0 m/s speed while exerting 5.10 ✕ 102 N of force to overcome air resistance and friction. A (c)to travel at a constant 25.0 m/s speed, exerting a 5.10 ✕ 102 N force to overcome air resistance and friction. Aarrow_forwardNichrome wire of cross-sectional radius 0.798 mm is to be used inwinding a heating coil. If the coil must carry a current of 8.73 A when a voltage of 1.3 x 102 V is applied across its ends, find:a) the required resistance of the coil and121.27Ω 147.46Ω 138.73Ω 11349Ωarrow_forwardA flashlight, which uses a 3.0 V battery, is turned on for 2.0 minutes. If the current in the flashlight is 100 mA, what is the energy dissipated? A. 121 J B. 9.0 J C. 72 J D. 36 Jarrow_forward
- A color television set draws about 2.5 A when connected to a 120-V source. What is the cost (with electrical energy at 8 cents/kWh) of running the set for 8.0 hours? Select one: a. 2.0 cents b. 40.18 cents c. 4.0 cents d. 19.20 centsarrow_forwardA current of 2.5 A flows through a 10 ohm resistor for 1.5 minutes. The number of electrons entering or leaving the resistor is: 1.4 x 1021 2.8 x 1022 2.5 x 1021 7.4 x 1021arrow_forwardA computer monitor uses 2.0 A of current when it is plugged into a 120 V outlet. Themonitor is never turned off. What is the yearly cost of operating the monitor if the cost of electricity is$0.12/kWh? [1 kWh = 3.6 x 106 J](a) $14 (c) $98 (e) $250(b) $21 (d) $170 (It's e but I don't understand the explanation)arrow_forward
- A light bulb has a resistance of 240 Ω when operating at 120 V. What is the current in the light bulb? a 1.0 A b 0.50 A c 0.20 A d 2.0 Aarrow_forward4. Given a DC battery of 12.0 volts connected to a single resistor of 3.00 Ohms. What current goes through the resistor? a. 12.0 A b. 36.0 A c. 3.00 A d. 4.00 A e. 16.7 Aarrow_forward7.) Suppose 10 mA of current is flowing through an electrical circuit. How many Amperes are flowing in the circuit? a. None of these b. 0.1 A c. 0.001 A d. 0.01 A 19.) If 1.5 volts (DC) is applied across a resistor and 200 mA of current is flowing through the resistor, how much power is dissipated by the resistor? a. None of these b. 300 W c. 0.3 W d. 30 W 20.) If 24 volts is dropped across a resistor and the resistors value is 1.2 kΩ, how much current is flowing through the resistor? a. 0.02 A b. None of these c. 20 A d. 0.2 Aarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers with Modern ...PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
College PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher: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
Physics for Scientists and Engineers with Modern ...
Physics
ISBN:9781337553292
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
Ohm's law Explained; Author: ALL ABOUT ELECTRONICS;https://www.youtube.com/watch?v=PV8CMZZKrB4;License: Standard YouTube License, CC-BY