Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN: 9781133939146
Author: Katz, Debora M.
Publisher: Cengage Learning
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Textbook Question
Chapter 29, Problem 37PQ
Each resistor shown in Figure P29.36 has a resistance of 100.0 Ω. An ideal emf device (120.0 V) is connected to points a and b via two leads (not shown in the figure). Find the current that flows through the emf device.
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Two resistors R1 = 5.0 Ω and R2 = 20.0 Ω are connected parallel and the combined resistors is connected to a battery of Emf = VT. If R1 carries current of 2.0 A, what is the current through R2?
A capacitor charging circuit consists of a battery, an uncharged 20 μF capacitor, and a 5.6 kΩkΩ resistor. At t = 0 ss the switch is closed; 0.15 s later, the current is 0.46 mA . What is the battery's emf?
The emf in the circuit shown in the figure below is 23.5 V. The resistors have resistances R1 = 46.6 0, R2 = 94.3 Q, and R3 = 53.0 N.
R1
R3
(a) What is the current in the emf device?
A
(b) If a fourth resistor is added in parallel with the first three resistors, will the current in the emf device increase, decrease, or stay the same?
O increase
O decrease
O stay the same
(c) If, instead, a fourth resistor is added in series with the emf device, will the current in the emf device increase, decrease, or stay the same?
O increase
O decrease
O stay the same
Chapter 29 Solutions
Physics for Scientists and Engineers: Foundations and Connections
Ch. 29.1 - What are the SI units of ?Ch. 29.1 - Prob. 29.2CECh. 29.2 - Prob. 29.3CECh. 29.4 - Prob. 29.5CECh. 29.4 - Prob. 29.6CECh. 29.5 - Prob. 29.7CECh. 29 - Study the symbols in Table 29.2. Then, without...Ch. 29 - Prob. 2PQCh. 29 - Prob. 3PQCh. 29 - Suppose you need to measure the potential...
Ch. 29 - Prob. 5PQCh. 29 - Prob. 6PQCh. 29 - A real battery (modeled as an ideal emf device in...Ch. 29 - Prob. 8PQCh. 29 - Two circuits made up of identical ideal emf...Ch. 29 - Prob. 10PQCh. 29 - Prob. 11PQCh. 29 - Prob. 12PQCh. 29 - Eight real batteries, each with an emf of 5.00 V...Ch. 29 - Prob. 14PQCh. 29 - Prob. 15PQCh. 29 - Prob. 16PQCh. 29 - Prob. 17PQCh. 29 - Prob. 18PQCh. 29 - Prob. 19PQCh. 29 - An ideal emf device with emf is connected to two...Ch. 29 - Prob. 21PQCh. 29 - Prob. 22PQCh. 29 - Prob. 23PQCh. 29 - Prob. 24PQCh. 29 - Prob. 25PQCh. 29 - Prob. 26PQCh. 29 - Determine the currents through the resistors R2,...Ch. 29 - The emf devices in the circuits shown in Figure...Ch. 29 - Prob. 29PQCh. 29 - Prob. 30PQCh. 29 - Prob. 31PQCh. 29 - Prob. 32PQCh. 29 - Prob. 33PQCh. 29 - Prob. 34PQCh. 29 - A Figure P29.35 shows a combination of six...Ch. 29 - A Each resistor shown in Figure P29.36 has...Ch. 29 - Each resistor shown in Figure P29.36 has a...Ch. 29 - Prob. 38PQCh. 29 - Prob. 39PQCh. 29 - The emf in Figure P29.40 is 4.54 V. The...Ch. 29 - Figure P29.41 shows three resistors (R1 = 14.0 ,...Ch. 29 - Figure P29.42 shows five resistors and two...Ch. 29 - The emfs in Figure P29.43 are 1 = 6.00 V and 2 =...Ch. 29 - Prob. 44PQCh. 29 - Figure P29.45 shows five resistors connected...Ch. 29 - Figure P29.46 shows a circuit with a 12.0-V...Ch. 29 - Two ideal emf devices are connected to a set of...Ch. 29 - Two ideal emf devices are connected to a set of...Ch. 29 - Three resistors with resistances R1 = R/2 and R2 =...Ch. 29 - Prob. 51PQCh. 29 - Prob. 52PQCh. 29 - Prob. 53PQCh. 29 - Prob. 55PQCh. 29 - At time t = 0, an RC circuit consists of a 12.0-V...Ch. 29 - A 210.0- resistor and an initially uncharged...Ch. 29 - Prob. 58PQCh. 29 - A real battery with internal resistance 0.500 and...Ch. 29 - Figure P29.60 shows a simple RC circuit with a...Ch. 29 - Prob. 61PQCh. 29 - Prob. 62PQCh. 29 - Prob. 63PQCh. 29 - Ralph has three resistors, R1, R2, and R3,...Ch. 29 - Prob. 65PQCh. 29 - An ideal emf device is connected to a set of...Ch. 29 - Prob. 67PQCh. 29 - An ideal emf device (24.0 V) is connected to a set...Ch. 29 - Prob. 69PQCh. 29 - What is the equivalent resistance between points a...Ch. 29 - A capacitor with initial charge Q0 is connected...Ch. 29 - Prob. 73PQCh. 29 - Prob. 74PQCh. 29 - Prob. 75PQCh. 29 - Prob. 76PQCh. 29 - Figure P29.77 shows a circuit with two batteries...Ch. 29 - In the RC circuit shown in Figure P29.78, an ideal...Ch. 29 - Prob. 79PQCh. 29 - Calculate the equivalent resistance between points...Ch. 29 - In Figure P29.81, N real batteries, each with an...Ch. 29 - Prob. 82PQCh. 29 - Prob. 83PQCh. 29 - Prob. 84PQCh. 29 - Figure P29.84 shows a circuit that consists of two...Ch. 29 - Prob. 86PQCh. 29 - Prob. 87PQCh. 29 - Prob. 88PQCh. 29 - Prob. 89PQCh. 29 - Prob. 90PQCh. 29 - Prob. 91PQCh. 29 - Prob. 92PQCh. 29 - Prob. 93PQCh. 29 - Prob. 94PQCh. 29 - Prob. 95PQ
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- In Figure P29.81, N real batteries, each with an emf and internal resistance r, are connected in a closed ring. A resistor R can be connected across any two points of this ring, causing there to be n real batteries in one branch and N n resistors in the other branch. Find an expression for the current through the resistor R in this case.arrow_forwardA battery with = 6.00 V and no internal resistance supplies current to the circuit shown in Figure P27.9. 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 1.20 mA. When the switch is closed in position b, the current in the battery is 2.00 mA. Find the resistances (a) R1, (b) R2, and (c) R3. Figure P27.9 Problems 9 and 10.arrow_forwardAt one instant, a current of 6.0 A flows through part of a circuit as shown in Figure P33.12. Determine the instantaneous potential difference between points A and B if the current starts to decrease at a constant rate of 1.0 102 A/s. FIGURE P33.12arrow_forward
- Two ideal emf devices are connected to a set of resistors as shown in Figure P29.47. Find an expression for the emf 2 in terms of 1, R1, R2, R3, R4, and the current through R4, labeled I1.arrow_forwardA capacitor charging circuit consists of a battery, an uncharged 20 μF capacitor, and a 4.0 kΩ resistor. At t = 0 s, the switch is closed; 0.15 s later, the current is 0.46 mA. What is the battery’s emf?arrow_forwardOn a sunny day, a rooftop solar panel delivers 60 W of power to the house at an emf of 17 V. How much current flows through the panel?arrow_forward
- You connect a battery, resistor, and a capacitor as in figure 1, where R= 15.0 ohms and C= 5.00x10^-6 F. The switch S is closed at t=0. When the current in the circuit has magnitude 3.00 A, the charge on the capacitor is 40.0x10^-6 C. (A) what is the emf of the battery? (B) at what time t after the switch is closed is the charge on the capacitor equal to 40.0x10^-6? (C) when the current has magnitude 3.00 A, at what rate is the energy being stored in the capacitor? (D) when the current has magnitude 3.00 A, at what rate is energy being supplied by the battery?arrow_forwardFour resistors R1=6.00 Ω, R2=10.0 Ω, R3=10.0 Ω, and R4=8.00 Ω are mounted as shown in the figure. The voltage of the battery is V = 16 Volts. What is the current in the R4 resistor?arrow_forwardA battery with Ɛ = 6.00 V and no internal resistance supplies current to the circuit shown in Figure P18.14. 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 1.20 mA. When the switch is closed in position b, the current in the battery is 2.00 mA. Find the resistances (a) R1, (b) R2, and (c) Rg. R2 R2 R1 ob ER3 Figure P18.14arrow_forward
- 17. A person in bare feet is standing under a tree during a thunderstorm, seeking shelter from the rain. A lightning strike hits the tree. A burst of current lasting 40.0 μs passes through the ground; during this time the potential difference between his feet is 29.7 kV. If the resistance between one foot and the other is 520 Ω, how much energy is dissipated in his body by the lightning? _____Jarrow_forwardA resistor R22=7.0 Ω is mounted in parallel with a resistor R33=14.0 Ω, and this combination is connected in series with a resistor R11=5.0 Ω and a 12 Volts battery. What is the power dissipated in the R22 resistor?arrow_forwardConsider the circuit below. The battery has emf 80.0 V, R1=40 ohms, R2= 20 ohms and L= 5.0 mH. Initially the switch is open and no currents are flowing. What is the current through the battery immediately after the switch is closed? a) zero b) 1.3 A c) 2.0 Aarrow_forward
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