Quantity Measured Nominal Measured RT 3 31.7 R1 100 95. 6 V 1 2- 9 R2 220 235 - 8 V 2 7 - 1 R3 470 482 I1 30 A I2 30A IT 30 A Circuit 2 Quantity Measured RT 68-2 V 1 9 . 93 6 V 2 9 . 936 I1 100. 5 MA I2 4 1.5 MA IT 142 M A Circuit 3 Quantity Measured RT 25 6 . 7 V1 3. 77 5 3 V 2 6 . 23 7 V 3 6 . 230 I1 40 MA 12 26 m A I3 13 MA IT 40 MA Circuit 4 Quantity Measured RT 199- 6 V1 2. 83 V 2 7- 10 14 V 3 9. 957 I1 29 MA 12 30 m A 13 20 . 9 MA IT 32CIRCUIT #1: SERIES CIRCUIT 1. Use the multimeter to measure and record the actual resistances for each of the individual resistors. You will use these values for all of your calculations. 2. Connect the 2 resistors in series using wire leads. Measure and record the total resistance of the series combination. 3. Turn the current knob on the power supply tlly counter clockwise, then turn it l/2 tum clockwise. Set the power supply to approximately 10 V. Set up the series circuit shown below by connecting the power supply to points A and B. 4. Connect the voltmeter in parallel across the 100 O. resistor, and record the potential difference. Repeat for the 220 Q resistor. Measure and record the power supply voltage. The sum of the two potential differences across the resistors should be equal to the potential di'erence across the source (about 10 V). Circuit 1 5. Measure and record the current through the circuit by inserting the multimeter. 6. Calculate theoretical currents and potentials across each resistor using the measured values of resistance and calculate percent errors. Record the values. CIRCUIT #2: PARALLEL CIRCUIT 1. Connect the 2 resistors in parallel using wire leads. Measure and record the total resistance of the parallel combination. 2. Connect the parallel circuit as illustrated below by connecting the power supply to terminals A and B. Check to see that the source voltage is still set to 10 V. Measure and record the voltage across each resistor using the digital voltmeter set to measure volts. (Make sure the voltmeter is connected in parallel.) 3. Use the ammeter to measure all the currents in the circuit including the total current, and a voltmeter to measure all A the voltages. Record all values. Make sure that the ammeter is connected in series. 100 o 220 o 4. Calculate theoretical currents and voltages across each resistor using the measured values of resistance and calculate percent errors. Record the value CIRCUIT #3: PARALLEL-SERIES CIRCUIT 1. Connect the circuit illustrated below. Measure and record the total resistance of the circuit using the multimeter connected to terminals A and B. 1009 220 Q. 470 9 Circuit 3 2. Connect the power supply to the circuit at terminals A and B. Check to see that the source voltage is still set to 10 V. Measure and record the voltage across each resistor using the digital voltmeter set to measure volts. (Make sure the voltmeter is connected in parallel.) 3. Measure and record all the currents and the voltages, including the total current. Set the multimeter to measure current, and then connect it in series with each resistor using the appropriate terminals on the meter. 4. Calculate theoretical currents and potentials across each resistor using the measured values of resistance and calculate percent errors. Record the values. CIRCUIT #4: SERIES-PARALLEL CIRCUIT 1. Connect the circuit illustrated below. Measure and record the total resistance of the circuit using the multimeter connected to terminals A and B. A 470 Q Circuit 4 2. Connect the power supply to the circuit at terminals A and B. Check to see that the source voltage is still set to 10 V. Measure and record the voltage across each resistor using the digital voltmeter set to measure volts. (Make sure the voltmeter is connected in parallel.) 3. Measure and record each current and voltage, including the total current (the current at point A or B). Record the values. 4. Calculate theoretical currents and potentials across each resistor using the measured values of resistance and calculate percent errors. Record the values. Include clean and legible calculations for this circuit here. (5 points) Data Tables {clean and legible) (10 points) Resistance Nominal Measured R1 100 R2 R3 Circuit 1 V = 10 V Quantity Measured Calculated % Error RT Circuit 2 V = 10 V Quantity Measured Calculated % Error RT V1 Circuit 3 V = 10 V Quantity Measured Calculated % Error RT V1 V2 V3 12 13 IT Circuit 4 V = 10 V Quantity Measured Calculated % Error RT V1 V2 V3 11 12 13 ITCONCLUSION (Clean and legible). Answer the Objectives (5 points) Address the second objective using your average percent errors as proof. Method (5 points) What were the main pieces of equipment used for this lab? Sources of Error (5 points) What could be improved in the equipment we used or the procedure we followed to reduce our errors in a meaningful way