To determine Calculate the value of load resistance R L in the given Figure using PSPICE. Explanation Given data: The no-load voltage v o across the terminals a-b is 4 V. If the load resistance R L is connected across the terminals a-b, the voltage v o drops to 3 V . Calculation: Apply voltage division rule to the given Figure across the terminals a-b. v o = ( 20 V ) ( R 2 40 Ω + R 2 ) Substitute 4 V for v o to find the resistance R 2 . 4 V = ( 20 V ) ( R 2 40 Ω + R 2 ) Rearrange the equation as follows, R 2 40 Ω + R 2 = 4 V 20 V R 2 40 Ω + R 2 = 1 5 5 R 2 = 40 Ω + R 2 5 R 2 − R 2 = 40 Ω Simplify the equation as follows, 4 R 2 = 40 Ω R 2 = 40 Ω 4 R 2 = 10 Ω PSPICE Simulation: Draw the circuit diagram in PSpice as shown in Figure 1. Save the circuit and provide the Simulation Settings as shown in Figure 2. Now run the simulation and the results will be displayed as shown in Figure 3 by enabling “Enable Bias Voltage Display” icon. From Figure 3, the voltage v o across the terminals a-b is 4 V. That is, if the resistance R 2 value is 10 Ω , the voltage v o obtained across the terminals a-b is 4 V. When the load resistance R L is connected to the terminals a-b, then the new value of voltage v o across the terminals a-b is 3V. The modified circuit of the given Figure is shown in Figure 4. Since the resistances 10 Ω and R L are connected in parallel. Therefore, the equivalent resistance for the parallel connection is, 10 Ω | | R L = 10 Ω × R L 10 Ω + R L The modified circuit is shown in Figure 5 Apply voltage division rule across the terminals a-b in Figure 5. v o = ( 20 V ) ( 10 Ω × R L 10 Ω + R L 40 Ω + 10 Ω × R L 10 Ω + R L ) Substitute 3 V for v o to find the load resistance R L

11th Edition

ISBN: 9780134746968

Author: James W. Nilsson, Susan Riedel

Publisher: PEARSON

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Chapter 3, Problem 12P

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Calculate the value of load resistance RL in the given Figure using PSPICE.

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Electric Circuits. (11th Edition)

Ch. 3.2 - For the circuit shown, find (a) the voltage υ, (b)...Ch. 3.3 - Find the no-load value of υo in the circuit...Ch. 3.3 - Find the value of R that will cause 4 A of...Ch. 3.4 - Use voltage division to determine the voltage υo...Ch. 3.5 - a. Find the current in the circuit shown. b. If...Ch. 3.5 - Find the voltage υ across the 75 kΩ resistor in...Ch. 3.6 - The bridge circuit shown is balanced when R1 = 100...Ch. 3.7 - Use a Y-to-Δ transformation to find the voltage υ...Ch. 3 - For each of the circuits shown in Fig. P...Ch. 3 - Prob. 2P

Ch. 3 - Prob. 3P Ch. 3 - Prob. 4P Ch. 3 - Prob. 5P Ch. 3 - Prob. 6P Ch. 3 - In the circuits in Fig. P 3.7(a)–(d), find the...Ch. 3 - Prob. 8P Ch. 3 - Find the power dissipated in each resistor in the...Ch. 3 - In the voltage-divider circuit shown in Fig. P...Ch. 3 - Calculate the no-load voltage υo for the...Ch. 3 - The no-load voltage in the voltage-divider circuit...Ch. 3 - Assume the voltage divider in Fig. P3.14 has been...Ch. 3 - The voltage divider in Fig. P3.16 (a) is loaded...Ch. 3 - There is often a need to produce more than one...Ch. 3 - For the current-divider circuit in Fig. P3.19...Ch. 3 - Find the power dissipated in the 30 resistor in...Ch. 3 - Specify the resistors in the current-divider...Ch. 3 - Show that the current in the kth branch of the...Ch. 3 - Look at the circuit in Fig. P3.1 (a). Use voltage...Ch. 3 - Look at the circuit in Fig. P3.1 (d). Use current...Ch. 3 - Attach a 6 V voltage source between the terminals...Ch. 3 - Look at the circuit in Fig. P3.7(a). Use current...Ch. 3 - Prob. 27P Ch. 3 - Prob. 28P Ch. 3 - For the circuit in Fig. P3.29, calculate i1 and i2...Ch. 3 - Find υ1 and υ2 in the circuit in Fig. P3.30 using...Ch. 3 - Find υo in the circuit in Fig. P3.31 using voltage...Ch. 3 - Find the voltage υx in the circuit in Fig. P3.32...Ch. 3 - A shunt resistor and a 50 mV. 1 mA d’Arsonval...Ch. 3 - Show for the ammeter circuit in Fig. P3.34 that...Ch. 3 - A d'Arsonval ammeter is shown in Fig....Ch. 3 - A d'Arsonval movement is rated at 2 mA and 100 mV....Ch. 3 - A d’Arsonval voltmeter is shown in Fig. P3.37....Ch. 3 - Suppose the d’Arsonval voltmeter described in...Ch. 3 - The ammeter in the circuit in Fig. P3. 39 has a...Ch. 3 - The ammeter described in Problem 3.39 is used to...Ch. 3 - The elements in the circuit in Fig2.24. have the...Ch. 3 - The voltmeter shown in Fig. P3.42 (a) has a...Ch. 3 - Assume in designing the multirange voltmeter shown...Ch. 3 - The voltage-divider circuit shown in Fig. P3.44 is...Ch. 3 - Prob. 45P Ch. 3 - You have been told that the dc voltage of a power...Ch. 3 - Prob. 47P Ch. 3 - Design a d'Arsonval voltmeter that will have the...Ch. 3 - Prob. 49P Ch. 3 - Prob. 50P Ch. 3 - The bridge circuit shown in Fig. 3.28 is energized...Ch. 3 - Find the detector current id in the unbalanced...Ch. 3 - Find the power dissipated in the 18Ω resistor in...Ch. 3 - Find the current and power supplied by the 40 V...Ch. 3 - Find the current and power supplied by the 40 V...Ch. 3 - Find the current and power supplied by the 40 V...Ch. 3 - Use a Δ-to-Y transformation to find the voltages...Ch. 3 - Prob. 59P Ch. 3 - Find io and the power dissipated in the 140Ω...Ch. 3 - Find the equivalent resistance Rab in the circuit...Ch. 3 - Find the resistance seen by the ideal voltage...Ch. 3 - Show that the expressions for Δ conductances as...Ch. 3 - Prob. 65P Ch. 3 - Prob. 66P Ch. 3 - Prob. 67P Ch. 3 - The design equations for the bridged-tee...Ch. 3 - Prob. 69P Ch. 3 - Prob. 70P Ch. 3 - Prob. 71P Ch. 3 - Prob. 72P Ch. 3 - Prob. 73P Ch. 3 - Prob. 74P Ch. 3 - Prob. 75P

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