Principles And Applications Of Electrical Engineering
6th Edition
ISBN: 9789814577410
Author: RIZZONI
Publisher: Mcgraw-Hill
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Textbook Question
Chapter 2, Problem 2.66HP
Find the equivalent resistance seen by the source in Figure P2.66. How many nodes are in the circuit?Assume:
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In the circuit shown in Figure P2.34, determine theterminal voltage of the source, the power supplied tothe circuit (or load), and the efficiency of the circuit.Assume that the only loss is due to the internalresistance of the source. Efficiency is defined as the ratio of load power to source power.VS = 12 V RS = 5 k RL = 7 k
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Chapter 2 Solutions
Principles And Applications Of Electrical Engineering
Ch. 2 - A free electron has an initial potential energy...Ch. 2 - The units for voltage, current, and resistance are...Ch. 2 - A particular fully charged battery can deliver...Ch. 2 - The charge cycle shown in Figure P2.4 is an...Ch. 2 - Batteries (e.g., lead-acid batteries) store...Ch. 2 - What determines: a. The current through an ideal...Ch. 2 - An automotive battery is rated at 120 A-h. This...Ch. 2 - A car battery kept in storage in the basement...Ch. 2 - Suppose the current through a wire is given by the...Ch. 2 - The charge cycle shown in Figure P2.10 is...
Ch. 2 - The charging scheme used in Figure P2.11 is...Ch. 2 - The charging scheme used in Figure P2.12 is...Ch. 2 - Use KCL to determine the unknown currents in the...Ch. 2 - Use KCL to find the current i1 and i2 in Figure...Ch. 2 - Use KCL to find the current i1,i2, and i3 in the...Ch. 2 - Use KVL to find the voltages v1,v2, and v3 in...Ch. 2 - Use KCL to determine the current i1,i2,i3, and i4...Ch. 2 - In the circuits of Figure P2.18, the directions...Ch. 2 - Find the power delivered by each source in Figure...Ch. 2 - Determine whether each element in Figure P2.20 is...Ch. 2 - In the circuit of Figure P2.21, determine the...Ch. 2 - For the circuit shown in Figure P2.22: a....Ch. 2 - For the circuit shown in Figure P2.23,...Ch. 2 - For the circuit shown in Figure P2.24, determine...Ch. 2 - For the circuit shown in Figure P2.25, determine...Ch. 2 - Prob. 2.26HPCh. 2 - Prob. 2.27HPCh. 2 - Prob. 2.28HPCh. 2 - Prob. 2.29HPCh. 2 - Prob. 2.30HPCh. 2 - Prob. 2.31HPCh. 2 - In the circuit of Figure P2.32, assume v2=vs/6 and...Ch. 2 - Prob. 2.33HPCh. 2 - An incandescent light bulb rated at 100 W will...Ch. 2 - An incandescent lightbulb rated at 60 W...Ch. 2 - Refer to Figure P2.36, and assume that...Ch. 2 - Refer to Figure P2.37, and assume that...Ch. 2 - Refer to Figure P2.38, and assume...Ch. 2 - Prob. 2.39HPCh. 2 - With no load attached, the voltage at the...Ch. 2 - Prob. 2.41HPCh. 2 - For the circuits of Figure P2.42, determine the...Ch. 2 - At an engineering site, a 1-hp motor is placed...Ch. 2 - Cheap resistors are fabricated by depositing a...Ch. 2 - Prob. 2.45HPCh. 2 - Use KCL and Ohm’s law to determine the current...Ch. 2 - Refer to Figure P2.13. Assume R0=1,R1=2,R2=3,R3=4...Ch. 2 - Apply KCL and Ohm’s law to find the power supplied...Ch. 2 - Refer to Figure P2.49 and assume...Ch. 2 - Refer to Figure P2.49 and assume...Ch. 2 - Prob. 2.51HPCh. 2 - The voltage divider network of Figure P2.52 is...Ch. 2 - Find the equivalent resistance seen by the source...Ch. 2 - Find the equivalent resistance seen by the source...Ch. 2 - In the circuit of Figure P2.55, the power absorbed...Ch. 2 - Find the equivalent resistance between terminals...Ch. 2 - For the circuit shown in Figure P2.57, find the...Ch. 2 - For the circuit shown in Figure P2.58,find the...Ch. 2 - Refer to Figure P2.59. Assume...Ch. 2 - Find the equivalent resistance seen by the source...Ch. 2 - For the circuit shown in Figure P2.61. assume...Ch. 2 - Determine the equivalent resistance of the...Ch. 2 - For the circuit shown in Figure P2.58, assume...Ch. 2 - In the circuit of Figure P2.64, find the...Ch. 2 - Refer to Figure P2.64 and determine the equivalent...Ch. 2 - Find the equivalent resistance seen by the source...Ch. 2 - Determine the voltage vo between nodes A and Bin...Ch. 2 - Refer to Figure P2.68 and assume...Ch. 2 - Prob. 2.69HPCh. 2 - Prob. 2.70HPCh. 2 - Prob. 2.71HPCh. 2 - The circuit of Figure P2.72 is used to measure the...Ch. 2 - Consider the practical ammeter, depicted in Figure...Ch. 2 - Prob. 2.74HPCh. 2 - Prob. 2.75HPCh. 2 - Prob. 2.76HPCh. 2 - A voltmeter is used to determine the voltage...Ch. 2 - Prob. 2.78HPCh. 2 - Figure P2.79 shows an aluminum cantilevered beam...Ch. 2 - Refer to Figure P2.79 but assume that the...
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- Determine the values of vx and iy in the circuit of Figure Q2 (b) and determine the number of branches and nodes in the circuit shown in Figure Q2 (b).arrow_forwardFind the equivalent resistance for the infinite network shown in Figure P2.12(a). Because of its form, this network is called a semi-infinite ladder. [Hint: If another section is added to the ladder as shown in Figure P2.12(b), the equivalent resistance is the same. Thus, working from Figure P2.12(b), we can write an expression for Req in terms of Req.Then, we can solve for Req.arrow_forwardDetermine the value of v2 and the power delivered by the source in the circuit of Figure P2.24 by using mesh-current analysis.arrow_forward
- Connect a 1-V voltage source across the terminals of the network shown in Figure P2.1(a). Then, solve the network by the mesh-current technique to find the current through the source. Finally, divide the source voltage by the current to determine the equivalent resistance looking into the terminals. Check your answer by combining resistances in series and parallel.arrow_forwardFor the circuit shown in Figure P2.43, finda. The equivalent resistance seen by the source.b. The current i.c. The power delivered by the source.d. The voltages v1, v2.e. The minimum power rating required for R1.arrow_forwardFor the circuit shown in Figure P2.38, finda. The currents i1 and i2.b. The power delivered by the 3-A current source andby the 12-V voltage source.c. The total power dissipated by the circuit.Let R1 = 25 , R2 = 10 , R3 = 5 , R4 = 7 , andexpress i1 and i2 as functions of v. (Hint: Apply KCL at thenode between R1 and R3.)arrow_forward
- In the circuit of Figure P2.61, the power absorbed by the 20- resistor is 20W. Find R. Given: VS = 50 V, R1 = 20 , R2 = 5 , R3 = 2 , R4 = 8 , R5 = 8 , R6 = 30 .arrow_forwardFind the power delivered by the source and the values of i1 and i2 in the circuit of Figure P2.23, using mesh-current analysis.arrow_forwardThe terminal voltage and terminal current were measured on thedevice shown in P2.14(a). The values of v and i are given in thetable of P2.14(b). Use the values in the table to construct a circuitmodel for the device consisting of a single resistor from Appendix H.arrow_forward
- Find the equivalent resistance looking into terminals for the network shown in Figure P2.60. [Hint: First, connect a 1-A current source across terminals a and b. Then, solve the network by the node-voltage technique. The voltage across the current source is equal in value to the equivalent resistance.]arrow_forwardIn the circuit of Figure P2.21, determine the powerabsorbed by the resistor R and the power delivered bythe current source.arrow_forwardFor the circuit shown in Figure P2.22:a. Determine which components are absorbing powerand which are delivering power.b. Is conservation of power satisfied? Explain youranswer.arrow_forward
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