Tutorials in Introductory Physics
1st Edition
ISBN: 9780130970695
Author: Peter S. Shaffer, Lillian C. McDermott
Publisher: Addison Wesley
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 6.1, Problem 4bT
Show that a simple application of the model for current that we have developed thus far is inadequate for determining how the brightness of bulb B changes when the switch is opened.
Expert Solution & Answer
Learn your wayIncludes step-by-step video
schedule03:26
Students have asked these similar questions
The figure below shows a simplified model of a cardiac defibrillator, a device used to resuscitate
patients in ventricular fibrillation.
S
R
Rorso
+
The capacitor C charge through the resistor R (when the switch S is toggled to left) and discharge
current through the patient's torso which is of resistance (when the switch S is toggled to right). This
phenomenon allows the heart's normal rhythm to be reestablished.
(a) If the capacitor is initially uncharged with C = 7.0 µF; ɛ = 1240 V, find the value of R (in ohms)
required to charge the capacitor to a voltage of 800 V in 2.1 s.
(b) If the capacitor is then discharged across the patient's torso with Rtorso = 1200 Q, calculate the
voltage (in V) across the capacitor after 4.0 ms.
When a steady current, I, is flowing through a conductor (e.g. the carbon paper here) with a non-negligible resistance, R, it will be possible to maintain a potential difference, ∆V = IR, between parts of the conductor along the direction of the current. Explain why in this situation there should be an electric field in the direction of the current but not in the direction perpendicular to the current.
Apply the loop rule to loop 2 (the smaller loop on the right). Sum the voltage changes across each circuit element around this loop going in the direction of the arrow. Remember that the current meter is ideal.
Express the voltage drops in terms of VbVbV_b, I2I2I_2, I3I3I_3, the given resistances, and any other given quantities.
Chapter 6 Solutions
Tutorials in Introductory Physics
Ch. 6.1 - Obtain a battery, a light bulb, and a single piece...Ch. 6.1 - A student has briefly connected a wire across the...Ch. 6.1 - Light a bulb using a battery and a single wire....Ch. 6.1 - Carefully examine a bulb. Two wires extend from...Ch. 6.1 - Compare the brightness of the two bulb with each...Ch. 6.1 - Compare the brightness of each of the bulbs in the...Ch. 6.1 - We may think of a bulb as percentage an obstacle,...Ch. 6.1 - Compare the brightness of the bulbs in this...Ch. 6.1 - Is the brightness of each bulb in the two-bulb...Ch. 6.1 - Formulate a rule for predicting how the current...
Ch. 6.1 - Does the amount of current through a battery seem...Ch. 6.1 - Unscrew one of the bulbs in the two-bulb parallel...Ch. 6.1 - The circuit at tight contains three identical...Ch. 6.1 - Show that a simple application of the model for...Ch. 6.2 - The circuits at right contain identical batteries,...Ch. 6.2 - The circuits at right contain identical batteries...Ch. 6.2 - Predict the relative brightness of bulbs...Ch. 6.2 - Set up the circuit with a single bulb and the...Ch. 6.2 - Set up the circuit containing two bulbs in series...Ch. 6.2 - Predict what the voltmeter would read if it were...Ch. 6.2 - Set up the circuit with two bulbs in parallel as...Ch. 6.2 - Answer the following questions based on the...Ch. 6.2 - Set up the circuit with three bulbs as shown and...Ch. 6.2 - Before setting up the circuit shown at right:...Ch. 6.2 - Both circuits al right have more than one path for...Ch. 6.3 - A capacitor is connected to a battery, bulb, and...Ch. 6.3 - Remove the capacitor and the bulb from the...Ch. 6.3 - Suppose an uncharged capacitor is connected in...Ch. 6.3 - Suppose that instead of connecting the uncharged...Ch. 6.3 - Suppose that the bulbs were connected in parallel...Ch. 6.3 - After completing the experiments above, two...Ch. 6.3 - Suppose that a different capacitor of smaller...Ch. 6.3 - Before connecting the circuit a student makes the...Ch. 6.3 - Make the following prediction on the basis of your...
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)
Express the unit vectors in terms of (that is, derive Eq. 1.64). Check your answers several ways Also work o...
Introduction to Electrodynamics
39. What is the sound intensity of a whisper at a distance of 2.0 m, in W/m2? What is the corresponding sound i...
College Physics: A Strategic Approach (4th Edition)
The particle’s average acceleration during the 2.00 s.
Physics (5th Edition)
Two trains emit 516-Hz whistles. One train is stationary. The conductor on the stationary train hears a 3.5-Hz ...
Physics for Scientists and Engineers with Modern Physics
Due to the light absorbed by Earth’s surface that was emitted by Earth’s atmosphere, is Earth’s temperature nea...
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
- The capacitor in the circuit shown below is initially uncharged. The switch is closed at t=0 s. AVbattery = 30 V, C = 3.0 F, and R = 2.0 Q. At sometime after the switch is closed, the current in the circuit is measured to be 5.9 A. What is the charge on the capacitor at this time, in Coulomb? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement. CHarrow_forwardin the circuit shown in the figure, the S switch is closed at t=0 and the capasitors, which are completely empty, begin to fill. Here E=30V, C=3 uF and R=40 ohm. A) what is the time constant of the circuit, T, in the units of microseconds? B)when t=T, what is the total charge, in units of microcoulomb?arrow_forwardGiven the parallel circuit presented below IT A I2 R2 R3 12v R1 в The total power that the Power Source of 12V provides is 120 Watts. It is known that the current 13 = 3Amp and the Resistor R2=40. Calculate the value of the resistor R1.arrow_forward
- According to Kirchhoff's second law, the algebraic sum of the emf will be equal to the algebraic sum of the product of current and resistance of a closed part of an electric circuit. Select one: O True O Falsearrow_forwardThe capacitor in the circuit shown below is initially uncharged. The switch is closed at t = 0 s. AVbattery = 30 V, C = 3.0 F, and R=2.0 Q. At sometime after the switch is closed, the current in the circuit is measured to be 3.1 A. What is the charge on the capacitor at this time, in Coulomb? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.arrow_forwardIn the circuit shown below, find the current and the voltage for each circuit element at the following times. (a)Long time after switch S is closed, and (b)Write down the relevant equations whose solution would yield the currents 1,,1, and 1, at an arbitrary time t. Just write down these equations and do not solve them. L=15mH R= 500 E - 50V R =750arrow_forward
- As shown , draw a graph of potential difference across the resistor versus time, showing at least two intervals of τ . Also draw a graph of current versus time for this situation.arrow_forwardHow would you go about improving the determination of the electrical resistance of a given material in resistor color coding?arrow_forwardA battery with E = 7.60 V and no internal resistance supplies current to the circuit shown in the figure below. When the double-throw switch S is open as shown in the figure, the current in the battery is 1.00 mA. When the switch is closed in position a, the current in the battery is 1.16 mA. When the switch is closed in position b, the current in the battery is 1.98 mA. R R R (a) Find the resistance R,. (b) Find the resistance R2. (c) Find the resistance R3.arrow_forward
- Referring to Figure , draw a graph of potential difference across the resistor versus time, showing at least two intervals of τ . Also draw a graph of currentversus time for this situation.arrow_forwardConsider the circuit shown in the figure, with =36.0 V,R, =50.02,R=1502 and L= 4.00 H. (a) Switch S, is closed. Just after S. is closed, what are the current i, through R, and the potential differences V and Va ? AC (b) After S. has been closed a long time so that the current has reached its final, steady value, what are i, . VAc and Ve ? (c) Find the expressions for i, , Vac and Ve as functions of time since S, was closed. Do your results agree with what you get in (a) and (b) ? Graph i, . Vsc and Ve as a function oftime. Ro L Aarrow_forwardThe circuit on the right contains three resistors, A, B, and C, which all have equal resistances. The emf is 110V. Which resistor dissipates the most thermal energy after the switch is closed? (Resistor A, B, or C). Why? What other quantity is maximized to tell you that the energy is maximized?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-Hill
Glencoe Physics: Principles and Problems, Student...
Physics
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Glencoe/McGraw-Hill
What is Electromagnetic Induction? | Faraday's Laws and Lenz Law | iKen | iKen Edu | iKen App; Author: Iken Edu;https://www.youtube.com/watch?v=3HyORmBip-w;License: Standard YouTube License, CC-BY