Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN: 9781133939146
Author: Katz, Debora M.
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Videos
Question
Chapter 33, Problem 15PQ
(a)
To determine
The expression for the total charge that passes through the resistor in one time constant.
(b)
To determine
The expression for the total charge that passes through the resistor in one time constant.
(c)
To determine
The comparison between the above two results and comment.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
The switch in the figure has been in position a for a long time. It is changed to position b at t = 0 s.
the charge Q on the capacitor immediately after the switch is changed is 18 μC
the current I through the resistor immediately after the switch is changed is
Part A What is the charge Q on the capacitor at t = 40 μs?Express your answer with the appropriate units.
Part B What is the current I through the resistor at t = 40 μs?Express your answer with the appropriate units.
Part C what is the charge Q on the capacitor at t = 200 μs?Express your answer with the appropriate units.
Part D What is the current I through the resistor at t = 200 μs?Express your answer with the appropriate units.
A motor in normal operation carries a direct current of 0.750 A when connected to a 120 V power supply. The resistance in the motor windings is 17.2 . Determine the following values.
(a) While in normal operation, what is the back emf generated by the motor?
(b) While in normal operation, at what rate is internal energy produced in the windings?
(c) What If? Suppose that a malfunction stops the motor shaft from rotating. At what rate will internal energy be produced in the windings in this case in kW (Most motors have a thermal switch that will turn off the motor to prevent overheating when this occurs.)
a)After how many time constants does the current in Figure 30-6 in the textbook reach within 5.0%% of its maximum value?
b)After how many time constants does the current in Figure 30-6 in the textbook reach within 1.0%% of its maximum value?
c)After how many time constants does the current in Figure 30-6 in the textbook reach within 0.10%% of its maximum value?
Chapter 33 Solutions
Physics for Scientists and Engineers: Foundations and Connections
Ch. 33.1 - Prob. 33.1CECh. 33.1 - Prob. 33.2CECh. 33.2 - Prob. 33.3CECh. 33.3 - Prob. 33.4CECh. 33.4 - Prob. 33.5CECh. 33.5 - Prob. 33.6CECh. 33.7 - Prob. 33.7CECh. 33 - Prob. 1PQCh. 33 - Prob. 2PQCh. 33 - Prob. 3PQ
Ch. 33 - Prob. 4PQCh. 33 - Prob. 5PQCh. 33 - Prob. 6PQCh. 33 - Prob. 7PQCh. 33 - Prob. 8PQCh. 33 - Prob. 9PQCh. 33 - Prob. 10PQCh. 33 - Prob. 11PQCh. 33 - At one instant, a current of 6.0 A flows through...Ch. 33 - Prob. 13PQCh. 33 - Prob. 14PQCh. 33 - Prob. 15PQCh. 33 - In Figure 33.9A (page 1052), the switch is closed...Ch. 33 - Prob. 17PQCh. 33 - Prob. 18PQCh. 33 - Prob. 19PQCh. 33 - Prob. 20PQCh. 33 - Prob. 21PQCh. 33 - Prob. 22PQCh. 33 - In the LC circuit in Figure 33.11, the inductance...Ch. 33 - A 2.0-F capacitor is charged to a potential...Ch. 33 - Prob. 26PQCh. 33 - Prob. 27PQCh. 33 - Prob. 28PQCh. 33 - For an LC circuit, show that the total energy...Ch. 33 - Prob. 30PQCh. 33 - Prob. 31PQCh. 33 - Prob. 32PQCh. 33 - Prob. 33PQCh. 33 - Suppose you connect a small lightbulb across a DC...Ch. 33 - Prob. 35PQCh. 33 - Prob. 36PQCh. 33 - Prob. 37PQCh. 33 - Prob. 38PQCh. 33 - Prob. 39PQCh. 33 - Prob. 40PQCh. 33 - Prob. 41PQCh. 33 - Prob. 42PQCh. 33 - Prob. 43PQCh. 33 - In an ideal AC circuit with capacitance, there is...Ch. 33 - Prob. 45PQCh. 33 - Prob. 46PQCh. 33 - Prob. 47PQCh. 33 - Prob. 48PQCh. 33 - Prob. 49PQCh. 33 - An AC generator with an rms emf of 15.0 V is...Ch. 33 - Prob. 51PQCh. 33 - Prob. 52PQCh. 33 - Prob. 53PQCh. 33 - Prob. 54PQCh. 33 - Prob. 55PQCh. 33 - Prob. 56PQCh. 33 - Prob. 57PQCh. 33 - Prob. 58PQCh. 33 - Prob. 59PQCh. 33 - An AC source of angular frequency is connected to...Ch. 33 - An RLC series circuit is constructed with R =...Ch. 33 - Prob. 62PQCh. 33 - A series RLC circuit driven by a source with an...Ch. 33 - Prob. 64PQCh. 33 - Prob. 65PQCh. 33 - Prob. 66PQCh. 33 - Prob. 67PQCh. 33 - Prob. 68PQCh. 33 - Prob. 69PQCh. 33 - Prob. 70PQCh. 33 - Problems 71 and 72 paired. Figure P33.71 shows a...Ch. 33 - Prob. 72PQCh. 33 - Prob. 73PQCh. 33 - Prob. 74PQCh. 33 - Prob. 75PQCh. 33 - In a series RLC circuit with a maximum current of...Ch. 33 - Prob. 77PQCh. 33 - Two coaxial cables of length with radii a and b...Ch. 33 - Prob. 79PQCh. 33 - Prob. 80PQCh. 33 - Prob. 81PQCh. 33 - Prob. 82PQCh. 33 - Prob. 83PQCh. 33 - Prob. 84PQ
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
- Each of the three situations in Figure P32.68 shows a resistor in a circuit in which currents are induced. Using Lenzs law, determine whether the current in each situation is from a to b or from b to a. a. If the current I in the wire in Figure P32.68A is increased from zero to I, what is the direction of the current induced across the resistor R? b. The switch in Figure P32.68B is initially closed and is thrown open at t = 0. What is the direction of the current induced across the resistor R immediately afterward? c. A bar magnet is brought close to the circuit shown in Figure P32.68C. What is the direction of the current induced across the resistor R?arrow_forwardIn Figure 33.9A (page 1052), the switch is closed at a at t = 0. Find an expression for the power dissipated by the resistor as a function of time, and sketch your result. Is the power lost greater as soon as the switch is closed or a long time after it has been closed? Does your answer make sense?arrow_forwardAn electric bus operates by drawing current from two parallel overhead cables, at a potential difference of 600 VV, and spaced 54 cm apart. The power input to the bus’s motor is at its maximum power of 71 hp Part A What current does it draw? Express your answer to two significant figures and include the appropriate units. Part B What is the repulsive force per unit length between the cables? Express your answer to two significant figures and include the appropriate units.arrow_forward
- The switch shown has been in position a for a long time. It is changed to position b at t = 0 s. What are the charge Q on the capacitor and the current I through the resistor (a) immediately after the switch is changed? (b) At t = 50 ms? (c) At t = 200 μs?arrow_forwardPart (a) Calculate the maximum charge, in coulombs, on the capacitor. Q = ______ C Part (b) The switch is now moved to position b. What is the magnitude of the instantaneous current, in amperes, through resistor at the instant the switch makes contact with terminal b? I = ______ A Part (c) With time measured from the instant that switch S is closed in position b, enter an expression for the voltage across the capacitor as a function of time. V(t) = ______ Part (e) With time measured from the instant that switch S is closed in position b, calculate the time, in seconds, when the charge on the capacitor is one-half of its maximum value. t1/2 = ______ s Part (f) Calculate the current through the resistor, in amperes, at time t=85.5ms after the switch is closed in position b. I = ______ Aarrow_forwarda)What is the current through R1 immediately after the switch S is closed? b) What is the current through R2 after the switch S has been closed for a very long time? Assume that the battery does not go dead.arrow_forward
- The switch in the circuit shown in the figure has been open for a long time. The resistors in the circuit each have a value of 60 Ω, the inductors each have a value of 60 mH, and V = 10 V. (a) What is the total equivalent inductance of the circuit between points A and B? (b) What is the current through R1 the instant after the switch is closed? (c) What is the current through R1 long after the switch has been closed?arrow_forward(a) How much current flows through the 2 = 18 V battery when the switch is closed? (b) How much current flows through the 1 = 15 V battery when the switch is closed? (c) How much current flows through the 2 = 18 V battery when the switch is open? (d) How much current flows through the 1 = 15 V battery when the switch is open?arrow_forwardIn the figure below, a current i = 28 A is set up in a long hairpin conductor formed by bending a wire into a semicircle of radius R = 9.0 mm. Point b is midway between the straight sections and so distant from the semicircle that each straight section can be approximated as being an infinite wire. (a) What is the magnitude of B (vector) at a? ___________T(b) What is the direction of B (vector) at a? 1) into the page 2) out of the page (c) What is the magnitude of B (vector) at b? ____________T(d) What is the direction of B (vector) at b? 1) into the page 2) out of the page (please show units. It really helps me out)arrow_forward
- An AC appliance cord has its live wire and neutral wire separated by 3.00 mm andcarries a 5.00 A current.a) What is the force per unit length between the wires?b) Are the forces between the two wires attractive or repulsive? Explain.c) Do appliance cords need any special design features to compensate for theseforces? Explainarrow_forwarda) What is the speed of a supersonic aircraft with a 17.0 -m wingspan, if it experiences a 1.60 -V Hall voltage between its wing tips when in level flight over the north magnetic pole, where the Earth's field strength is 8.00×10−5T? (b) Explain why very little current flows as a result of this Hall voltage.arrow_forwardSuppose in the figure that the four identical currents i = 20 A, into or out of the page as shown, form a square of side 76 cm. a) What is the force per unit length (magnitude and direction) on the wire in the bottom left hand corner? (N/m) Take the positive y direction as up and the positive x direction as to the right. b)What is the magnitude of the force per unit length? c)What is the x component of the force per unit length? d)What is the y component of the force per unit length?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
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