Problem 2.1P Problem 2.2P: The voltage across a particular resistor is 8.60 V and the current is 366A. What is the actual... Problem 2.3P: You can choose to connect either a 4.7-k resistor or a 47-k resistor across a 5-V source. Which will... Problem 2.4P: A model railroader wants to be able to electrically throw a rail switch Rswitch from two different... Problem 2.5P: A 100-k resistor dissipates 50mW. Find the current through the resistor. Problem 2.6P: The conductance of a particular semiconductor resistor is 0.05 ms. Find the current through the... Problem 2.7P: In Figure P2—7 the resistor dissipates 25 mW. Find Rx. Problem 2.8P: In Figure P2—8 find Rx and the power supplied by the source. Problem 2.9P: A resistor found in the lab has three orange stripes followed by a gold stripe. An ohmmeter measures... Problem 2.10P: The iv characteristic of a nonlinear resistor is v=82i+0.17i3. a. Calculate v and p for i=0.5,1,2,5,... Problem 2.11P: A 100-k resistor has a power rating of 0.25 W. Find the maximum current that can flow through the... Problem 2.12P: A certain type of film resistor is available with resistance values between 10 and 100M. The maximum... Problem 2.13P: Figure P2—13 shows the circuit symbol for a class of two-terminal devices called diodes. The iv... Problem 2.14P: A thermistor is a temperature-sensing element composed of a semiconductor material, which exhibits a... Problem 2.15P: In Figure P2-15i2=6A and i3=2A. Find i1 and i4. Problem 2.16P: In Figure P2-16 determine which elements are in series, parallel, or neither. How many different... Problem 2.17P: For the circuit in Figure P2—17: Identify the nodes and at least two loops. Identify any elements... Problem 2.18P: In Figure P2-17 i2=30mA and i4=20mA. Find i1 and i3. Problem 2.19P: For the circuit in Figure P2—19: Identify the nodes and at least five loops in the circuit. Identify... Problem 2.20P: In Figure P2-19 v2=20V,v3=20V, and v4=6V. Find v1,v5, and v6. Problem 2.21P: In many circuits the ground is often the metal case that houses the circuit. Occasionally a failure... Problem 2.22P: The circuit in figure P2-22 is organized around the three signal lines A, B, and C. Identify the... Problem 2.23P: Are any of the elements in Figure P2-23 in series or parallel? If so, identify the ones that are.... Problem 2.24P: Are any of the elements in Figure P2-24 in series or parallel? If so, identify the ones that are.... Problem 2.25P: Use the passive sign convention to assign voltage variables consistent with the currents in Figure... Problem 2.26P: If a wire is connected between nodes B and C in Figure P2—24, what can be said about the voltages... Problem 2.27P: The KCL equations for a three-node circuit are as follows:... Problem 2.28P: For the circuit in Figure P2—28, write a complete set of connection and element constraints and then... Problem 2.29P: For the circuit in Figure P2—29, write a complete set of connection and element constraints, then... Problem 2.30P: Find vx and ix in Figure P2-30. Compare the results of your answers with those in problem 2-29. What... Problem 2.31P: A modeler wants to light his model building using miniature grain-of-wheat light bulbs connected in... Problem 2.32P: Find vx and ix in Figure P2-32. Problem 2.33P: In Figure P2-33: Assign a voltage and current variable to every element. Use KVL to find the voltage... Problem 2.34P: Find vO in the circuit of Figure P2-34. Problem 2.35P: Find the power provided by the source in Figure P2-35. Problem 2.36P: Figure P2-36 shows a subcircuit connected to the rest of the circuit at four points. Use element and... Problem 2.37P: In Figure P2-37 ix=0.33mA. Find the value of R. Problem 2.38P: Figure P2—38 shows a resistor with one terminal connected to ground and the other connected to an... Problem 2.39P: Find the equivalent resistant REQ in Figure P2-39. Problem 2.40P: Find the equivalent R EQ in Figure P2-40. Problem 2.41P: Find the equivalent resistance REQ in Figure P2-41. Problem 2.42P: Equivalent resistance is defined at a particular pair of terminals. In Figure P2-42, the same... Problem 2.43P: Find REQ in Figure P2—43 when the switch is open. Repeat when the switch is closed. Problem 2.44P: Find REQ between nodes A and B for each of the circuits in Figure P2—44. What conclusion can you... Problem 2.45P: Show how the circuit in Figure P2—45 could be connected to achieve a resistance of 100, 200, 150,... Problem 2.46P: In Figure P2-46 find the equivalent resistance between terminals A-B, A-C, A-D, B-C, B-D, and C-D. Problem 2.47P: In Figure P2-47 find the equivalent resistance between terminals A-B, A-C, A-D, B-C, B-D, and C-D. Problem 2.48P: Select a value of RL in Figure P2-48 so that REQ=15k. Repeat for REQ=11k. Problem 2.49P: Using no more than four 1-k resistors, show how the following equivalent resistors can be... Problem 2.50P: Do a source transformation at terminals A and B for each practical source in Figure P2-50. Problem 2.51P: For each of the circuits in Figure P2-51, find the equivalent practical voltage source at terminals... Problem 2.52P: In Figure P2-52, the iv characteristic of network N is v+50i=5V. Find the equivalent practical... Problem 2.53P: Select the value of Rx in Figure P2-53 so that REQ=100k. Problem 2.54P: Two 10-k potentiometers (a variable resistor whose value between the two ends is 10k and between one... Problem 2.55P: Select the value of R in Figure P2-55 so that RAB=RL. Problem 2.56P: What is the range of REQ in Figure P2-56? Problem 2.57P: Find the equivalent resistance between terminals A and B in Figure P2-57. Problem 2.58P: Use voltage division in Figure P2-58 to find vx,vy, and vz. Then show that the sum of these voltages... Problem 2.59P: Use voltage division in Figure P2-59 to obtain an expression for vL in terms of R,RL, and vs. Problem 2.60P: Use current division in Figure P2-60 to find ix,iy, and iz. Then show that the sum of these currents... Problem 2.61P: Use current division in Figure P2-61 to find an expression for vL in terms of R, RL, and is. Problem 2.62P: Find ix,iy, and iz in Figure P2-62. Problem 2.63P: Find vO in the circuit of Figure P2-63. Problem 2.64P: You wish to drive a 1-k load from your car battery as shown in Figure P2-64. The load needs 5 V... Problem 2.65P: Find the range of values of vo in Figure P2-65. Problem 2.66P: Use current division in the circuit of Figure P2-66 to find Rx so that the voltage out is 3 V.... Problem 2.67P: Figure P2-67 shows a voltage bridge circuit, that is, two voltage dividers in parallel with a source... Problem 2.68P: A Ideally, a voltmeter has infinite internal resistance and can be placed across any device to read... Problem 2.69P: Select values for R1,R2, and R3 in Figure P2-69 so that the voltage divider produces the two output... Problem 2.70P: Select a value of Rx in Figure P2-70 so that vL=4V. Problem 2.71P: Select a value of Rx in Figure P2-71 so that vL=2V. Repeat for 4 V and 6 V. Caution: Rx must be... Problem 2.72P: Use circuit reduction to find vx and ix in Figure P2-72. Problem 2.73P: Use circuit reduction to find vx,ix, and px in Figure P2-73. Repeat using Multisim. Problem 2.74P: Use circuit reduction to find vx and ix in Figure P2-74. Problem 2.75P: Use circuit reduction to find vx,ix, and px in Figure P2-75. Problem 2.76P: Use circuit reduction to find vx and ix in Figure P2-76. Problem 2.77P: Use source transformation to find ix in Figure P2-77. Problem 2.78P: Select a value for Rx so that ix=0A in Figure P2-78. Problem 2.79P: Use source transformations in Figure P2-79 to relate vo to v1,v2, and v3. Problem 2.80P: The current through RL in figure P2-80 is 100mA. Use source transformations to find RL. Validate... Problem 2.81P: Select Rx so that 50 V is across it in Figure P2-81. Problem 2.82P: The box in the circuit in Figure P2-82 is a resistor whose value can be anywhere between 8 and 80kQ.... Problem 2.87P: A circuit is found to have the following element and connection equations:... Problem 2.88P: Consider the circuit of Figure P2-88. Use MATLAB to find all of the voltages and currents in the... Problem 2.91IP: Nonlinear Device Characteristics The circuit in Figure P2-91 is a parallel combination of a 75-... Problem 2.92IP Problem 2.93IP: Center Tapped Voltage Divider Figure P2-93 shows a voltage divider with the center tap connected to... Problem 2.95IP: Active Transducer Figure P2-95 shows an active transducer whose resistance R(VT) varies with the... Problem 2.97IP: Programmable Voltage Divider Figure P2-97 shows a programmable voltage divider in which digital... Problem 2.98IP: Analog Voltmeter Design Figure P2-98(a) shows a voltmeter circuit consisting of a D'Arsonval meter,... Problem 2.99IP: MATLAB Function for Parallel Equivalent Resistors Create a MATLAB function to compute the equivalent... format_list_bulleted
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