ch_03_probs - CHAPTER Circuit Analysis 3 37 CHAPTER 3:...

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CHAPTER 37 3 Circuit Analysis
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38 Chapter 3: Circuit Analysis CHAPTER 3: PROBLEMS 3.1 Consider the circuit shown below. (a) Find the voltage, Va. (b) Find the current, I2. (c) Find the current, I1. (d) Find the power dissipated in the 4A current source. (e) Find the power dissipated in the 10 resistor. 3.2 Consider the circuit shown below. (a) Write an expression for each of the three currents, I1, I2 and I3 in terms of only the voltages Va and Vb and the resistors. + - + - 8V 4A 10V 4 3Ω 10Ω 7Ω 2Ω Ι1 Ι4 Ι3 Ι2 Va + - 15V 1A 2A 2 8Ω 4Ω Vb I1 I3 I2
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39 Analog Electronics (b) Use Nodal analysis and KCL to solve for the values of Va and Vb. 3.3 Use Nodal Analysis in the circuit below to find Va and Vb. 3.4 Consider the circuit shown below. (a) Use nodal analysis to solve for the node voltages at A and B. (b) Calculate the power dissipated by all of the devices in the circuit, and show that they sum up to zero. + - 4V 1A 3A 2 Va Vb 3Ω 1Ω 1Ω + - + - Vx = 10V Is = -1mA Vy = 6V R1 = 1k R2 = 2 k R4 = 4k R3 16k A B
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40 Chapter 3: Circuit Analysis 3.5 For the circuit shown below, we will solve for the node volt- ages at A, B and C using the technique of Nodal Analysis. (a) Redraw the diagram above labeling voltage and current on every element of the circuit consistent with that of a device that dissipates power. (b) Write three equations in terms of the unknown node volt- ages and other known symbolic quantities (R1, R2, Ix, etc). (c) Given that R1 = 5k ,R2=1k ,R3=1k ,R4=1k ,Ix= 2mA and Vy = 10, solve for Va, Vb and Vc using the equa- tions from part (b). (d) Find the power dissipated in all of the elements in the cir- cuit.
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This note was uploaded on 07/14/2008 for the course ECE 18100 taught by Professor Williams during the Fall '07 term at Carnegie Mellon.

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ch_03_probs - CHAPTER Circuit Analysis 3 37 CHAPTER 3:...

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