2.4 Lab Assignment Series Circuit

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Electrical Engineering

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Apr 3, 2024

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College of Technology 2016 EET113 Electric Circuits I Lab#3 Series Circuit EET113_W2_LabAssignment3 I. Objective : 1. Build a series electric circuit. 2. Verify the validity of KVL. 3. Verify the voltage divider rule. II. Parts List : 1. Resistors: 1 k  , 3.3 k  and 10 k  2. Variable Power Supply III. Procedures : Part A : 1. Connect and simulate the circuit, shown below in Figure 1, in MultiSim. R1 3.3kΩ V1 12V Ammeter 0 A + - R2 1kΩ R3 10kΩ Voltmeter2 0 V + - Voltmeter3 0 V + - Voltmeter 0 V + - Figure 1 A series electric circuit 2. Measure the voltage across the power supply, V s = __6.009V (5.991V) _____ 3. Measure the current flowing in the circuit, I T = __839.817 uA _____ 4. Measure the voltage across each resistor. 5. Include a screen shot of simulations in your lab report. Table 1 Voltage readings Resistor Voltage 1 k  , .84 V 3.3 k  2.77 V 10 k  8.39 V 6. Verify Kirchhoff’s Voltage law, KVL. 1

College of Technology 2016 i. All voltages together going to and through the resistors are equal to zero. Part B: 1. Connect and simulate the circuit, shown below in Figure 2, in MultiSim. 2. Connect a voltmeter with reference to ground to measure voltages at points A, B, C and D. 3. Observe the circuit behavior and the readings and note what to expect. 4. Record the reading of the probes at each point in Table 2 below. Figure 2 A series electric circuit Table 2 Voltage drop across the resistor for different reference points Measured Voltage V A 12.0 V V B 11.2 V V C 8.39 V V D (Reference) 0 V 5. Calculate: a. V AB = ___.8V_____ b. V BC = ___2.81V_____ c. V CD = __8.39V______ 6. Change the ground from point ‘D’ to point ‘C’ 7. Repeat the voltage measurements and record the readings at each point in Table 3 below 8. Calculate: d. V AB = ___0.839V_____ 2

College of Technology 2016 e. V BC = __2.769V______ f. V CD = ___8.392V_____ Table 3 Voltage drop across the resistor for different reference points Measured Voltage V A 3.608V V B 2.769V V C (Reference) 0 V V D 8.392V 9. Change the ground from point ‘C’ to point ‘B’ 10. Repeat the voltage measurements and record the readings at each point in Table 3 below 11. Calculate: g. V AB = ___0.84v _____ h. V BC = ____2.769v ____ i. V CD = __ -8.392v ______ Table 4 Voltage drop across the resistor for different reference points Measured Voltage V A 0.84V V B (Reference) 0 V V C 2.769v V D 11.16v IV. Assignment: 1. Submit your lab report to your instructor following the template available in your course shell. 2. In your lab report, make sure to address your measurements and conclusions regarding: i. Any differences between the recorded measured values for the current and the calculated ones, if any. ii. Any differences between the recorded measured values for the voltages and the calculated ones, if any. 3. Verify KVL 4. Include screen shots of your simulations. 3

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College of Technology 2016 Lab Report: Abstract: In Multisim, build a series electric circuit, and then verify KVL as well as the voltage divider rule. Introduction: In Multisim, for part A I created a circuit showing voltage and current, and in Part B another circuit showing voltage between the resistors A,B,C, and D. Procedure: Locating the voltage, current on each resistor I had to find voltage at each junction. And then switching from ground from different points as well. For example, on part A, I had to find the voltage across each resistor by connecting the multimeter to different points to find each individual reading. Analysis & Results: I found that a lot of the voltage readings were similar. Conclusion: I learned that using different power supplies you can see the difference between the voltage and current. I also learn how you can see the difference between voltage readings and even get false readings by not putting your probes in the correct location Refences: n/a 4