LABORATORY EXPERIMENT 1 Objective: To demonstrate how to test resistors using a digital multimeter Materials needed: Mat

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Laboratory Experiment 1 Objective To Demonstrate How To Test Resistors Using A Digital Multimeter Materials Needed Mat 1 (109.09 KiB) Viewed 31 times

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LABORATORY EXPERIMENT 1 Objective: To demonstrate how to test resistors using a digital multimeter Materials needed: Material Components Values Resistors 1 1 ΚΩ 1.5 kg 2.2 ΚΩ Multimeter Variable Power Supply Procedure: 1 Measure three resistors with listed values of 1 kg, 1.5 k0, 22 kg. Record the measured values in Table 1.1. 2 Connect the circuit shown in Figure 1.1. The ammeter should be in series with the resistor. The voltmeter should be connected directly across the resistor. A 0.000 SR Vs v Figure 1.1 Listed Value Measured Value Table 1.1 Component R1 R2 1 ΚΩ 1.5 ΚΩ R3 22 ΚΩ [TURN OVER] 9 3 4 Adjust the power supply for a voltage of 2.0 V. Read the current that is through the resistor and record it in Table 1.2. Adjust the power supply for 4.0 V. Read the current that is through the resistor and record it in Table 1.2. Continue taking current readings for each of the voltages listed in Table 1.2. Table 1.2 Vs = 1 = 2.0 V 4.0 V 6.0 V 8.0 V 10.0 V 5 5 Replace R1 with R2 and repeat steps 3 and 4. Record the data in Table 1.3. 3 Table 1.3 Vs = 2.0 V 4.0 V 6.0 V 8.0 V 10.0 V I= 1 6 Replace R1 with R2 and repeat steps 3 and 4. Record the data in Table 1.4. 2.0 V 4.0 V 6.0 V 8.0 V 10.0 V Table 1.4 Vs = I= Table 1.2 Vs = 2.0 V 4.0 V 6.0 V 8.0 V 10.0 V 1 = 5 Replace R1 with R2 and repeat steps 3 and 4. Record the data in Table 1.3. Table 1.3 Vs = 2.0 V 4.0 V V 6.0 V 8.0 V 10.0 V 6 Replace R1 with R2 and repeat steps 3 and 4. Record the data in Table 1.4 Table 1.4 Vs = 2.0 V 4.0 V 6.0 V 8.0 V 100 V 1 =

6 Replace R1 with R2 and repeat steps 3 and 4. Record the data in Table 1.4. Table 1.4 Vs = 2.0 V 4.0 V 6.0 V 8.0 V 10.0 V 1 = 7 On Plot 1.1. graph all three l-V curves using the data from Tables 1.2, 1.3, and 1.4. Plot dependent variable (current) on the y-axis and the independent variable (voltage) on the x-axis. Choose a scale for the graph that spreads the data over the entire grid. [TURN OVER] 10 ELA1501-Practical-2022 1 0 2 3 4 5 6 7 8 lo V < Plot 1.1 Conclusion: TAAT

LABORATORY EXPERIMENT 3 Objective: To demonstrate the operation of a capacitor Component List: Components Values Resistors 1x1 ΚΩ Capacitors 1 x 56 F Electrolytic capacitor 1 x 100 pF Electrolytic capacitor Diodes 2 x LEDs Switches 2 x SPST switch Connecting wires As needed Procedure: 1 Connect the circuit as shown in Figure 3.1. The switches can be made from jumper wires. Leave both switches open. The light-emitting diodes (LEDs) and the capacitor are both polarized components; they must be connected in the correct direction in order to work properly. R1 w 1ko LED2 S2 C1 100uF SR2 10 V1 12V SALEDI Figure 3.1 Close S1 and observe the LEDs. Describe your observation 2 3 4 Open S1 and close S2. What happens? Now connect the 56 uF capacitor in series with C1. Make sure the capacitors are fully discharged by shorting them with a piece of wire; then close S1. Measure the voltage across each capacitor. Do this quickly to prevent the meter from causing the capacitors to discharge. Record the voltages and describe your observations. 13 V1: V2: 5 Using the measured voltage, compute the charge on each capacitor (Q = CV). Q1: Q2: 6 Then open S1 and close S2. Observe the result. 7 Change the capacitors from series to parallel. Ensure that the capacitors are fully discharged. Open S2 and close S1. Measure the voltage (quickly) across the capacitors. Record the voltages and describe your observations. V1: V2: 8 Use the measured voltage to calculate the charge across each capacitor. Q1: Q2: Conclusion

LABORATORY EXPERIMENT 2 Objective: The aim of this experiment is to develop in student basic electronics skills, electronic assembly. measurements and troubleshooting skills. This practical will also allow the student to better comprehend complex resistive networks and to analyse them. Materials needed: Material / Components Values Resistors 2200, 8200 and 1000 Multimeter Breadboard Wires A w VAB R1 R3 B Vec с RAB Rec RAC Calculated Measured Analyze the circuit above as seen from AB, BC and AC and calculate the resistance seen form these terminals. 1121