College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Question
thumb_up100%
(a) What is the resistance of a lightbulb that uses an average power of 40.0 W when connected to a 60.0-Hz power source having a maximum voltage of 170 V?
_________ Ω
(b) What is the resistance of a 60.0-W lightbulb? (Assume the lightbulb uses an average power of 60.0 W when connected to a power source having a maximum voltage of 170 V.)
_________ Ω
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution
Trending nowThis is a popular solution!
Step by stepSolved in 2 steps with 1 images
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 figure shows a battery connected to two resistors in series. What is the power dissipated across each resistor? R1 = 58.0 Ω, R2 = 2.60 Ω and V = 12.0 V. The power dissipated by R1 is 1.35×103 W and the power dissipated by R2 is 60.5 W The power dissipated by R1 is 2.27 W and the power dissipated by R2 is 0.102 W The power dissipated by R1 is 1.35×103 W and the power dissipated by R2 is 0.102 W The power dissipated by R1 is 2.27 W and the power dissipated by R2 is 60.5 Warrow_forwardConsider a series RC circuit as in the figure below for which R = + E R (a) Find the time constant of the circuit. S 6.50 MQ, C = 6.70 μF, and E = 25.5 V. (b) Find the maximum charge on the capacitor after the switch is thrown closed. μC (c) Find the current in the resistor 10.0 s after the switch is closed. μAarrow_forwardFind the current through a person and identify the likely effect on her if she touches a 120 V AC source in the following circumstances. (Note that currents above 10 mA lead to involuntarily muscle contraction.) a) Find the current (in mA) if she is standing on a rubber mat and offers a total resistance of 305 kΩ. b) Find the current (in mA) if she is standing barefoot on wet grass and has a resistance of only 3500 Ω.arrow_forward
- A 530-Ω resistor, an uncharged 3.40-μF capacitor, and a 4.80-V emf source are connected in series. What is the instantaneous power to the capacitor after 3 time constants? Calculate your answer in the units of milli-watts (mW). Hint: Instantaneous power is the product of instantaneous potential drop and instantaneous current. Write your answer in decimal form with three digits to the right of the decimal point (e.g. 5.389); do not write any units.arrow_forward(a) What is the resistance of a lightbulb that uses an average power of 85.0 W when connected to a 60.0 Hz power source having a maximum voltage of 190 V? Ω (b) What is the resistance of a 110 W bulb? Ωarrow_forwardA capacitor, C, is (fully) charged by connecting it to a 7 Volt EMF and then is allowed to dischargethrough a 2 Ω resistor as shown in the Figure. What is the current, I, in the circuit (in A) when thestored energy in the capacitor has dropped to 30% of its initial value?arrow_forward
- Consider the arrangement shown in the figure below where R = 8.50 0, l=1.40 m, and B = 2.75 T. HINT www xxxxxx * ****** ****** W ****** xxx x xxx (b) What power (in W) is delivered to the resistor? W ****** ****** 15₂ (a) At what constant speed (in m/s) should the bar be moved to produce a current of 1.40 A in the resistor? m/s app (c) What magnetic force (in N) is exerted on the moving bar? (Enter the magnitude.) N (d) What instantaneous power (in W) is delivered by the force F on the moving bar? apparrow_forwardIn the figure, these three resistors are connected to a voltage source so that R2 = 4.25 Ω and R3 = 9.5 Ω are in parallel with one another and that combination is in series with R1 = 1.5 Ω. Answer both questions below: A) Calculate the power being dissipated by the third resistor R3, in watts. B) Find the total power supplied by the source, in watts.arrow_forwardFor the circuit in the figure below, find the average power, the maximum instantaneous power, and the minimum instantaneous power delivered to the capacitor. Use f = 500 Hz, Vmax=20 V, and C = 1.4 μF. VAC (a) the average power W (b) the maximum instantaneous power w (c) the minimum instantaneous power warrow_forward
- A heart defibrillator being used on a patient has an RC time constant of 11.0 ms due to the resistance of the patient and the capacitance of the defibrillator. If the defibrillator has an 7.25 µF capacitance, what is the resistance of the path through the patient? resistance: Ω If the initial voltage is 12.0 kV, how long does it take to decline to 323 V? time: Question Credit: OpenStax College Physicsarrow_forwardConsider a series RC circuit as in the figure below for which R = 8.00 MQ, C = 1.00 µF, and E = 27.0 V. R (a) Find the time constant of the circuit. (b) What is the maximum charge on the capacitor after the switch is thrown closed? (c) Find the current in the resistor 10.0 s after the switch is closed. HAarrow_forward
arrow_back_ios
arrow_forward_ios
Recommended textbooks for you
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningUniversity Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSONIntroduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press
- Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningLecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-WesleyCollege Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
University Physics (14th Edition)
Physics
ISBN:9780133969290
Author:Hugh D. Young, Roger A. Freedman
Publisher:PEARSON
Introduction To Quantum Mechanics
Physics
ISBN:9781107189638
Author:Griffiths, David J., Schroeter, Darrell F.
Publisher:Cambridge University Press
Physics for Scientists and Engineers
Physics
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:9780321820464
Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:Addison-Wesley
College Physics: A Strategic Approach (4th Editio...
Physics
ISBN:9780134609034
Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:PEARSON