RC Circuits Lab Battery 3 VOLTS MAX Names: O) Switch Battery Cap Res Part A - Simple RC Circuit & Series/Parallel (1) Use the multimeter to measure the resistance of the two resistors and the capacitance of the two capacitors. Also measure the EMF of the battery. R1 = 140 KS R2 = 79. 93 ke c1 = 98.811 62= 360 M EMF = - 1. 4688 my (2) Connect the pictured circuit using the "100 k(" resistor and the "100 JF" capacitor. If the voltmeter reads anything but zero before pressing the switch, discharge the capacitor by momentarily connecting a wire between B and C. (3) Hold the switch down and measure the time it takes for the voltage reading across the capacitor to go from O V to 1.1 V. Be sure to discharge the capacitor when finished. (4) Replace the capacitor with the other capacitor (labeled "330 JF"), ensure that it is initially discharged, and repeat step (3) (5) Repeat steps (2) through (4) using the "220 k(" resistor instead of the "100k(" resistor. (6) Replace the original "100 k(" resistor but connect the two capacitors in series. Connect the voltmeter across the entire two-capacitor arrangement. Close the switch and measure the time it takes for the voltage reading to reach 1.1 V. Discharge both capacitors afterward. (7) Repeat step (6) with the capacitors arranged in parallel. 8) Use the charging equation to calculate the time constant for each of the 6 configurations. Resistance Capacitance Charging Time Constant Time (52) (F) Time (s) Circuit Charging (s) Time (s) Constant Type (S 140 M12 98. 8 36 . 415 Series 1 5 79 . 9 3 /4 98.8 16 . 81 5 14016 52 36 0 3:29. 52 (1.0 ) ) y Parallel 2.3 S 79.93 1360 58. 85 Part B - Complex Circuit (1) Connect the circuit shown below. Connect both the voltmeter and the ammeter in the circuit as shown. (2) Close the switch and measure the maximum voltage that the capacitor acquires and the current through the battery once the maximum voltage is reached. (3) Open the switch and record how long it takes the voltage to reduce to exactly a third of the maximum. 140 KR 100 UF Maximum Voltage (V) 10.99 08 -220-KA Final Current (A) 0 . 49 MA Time To Decay (s) 3:16. 39 m 400 -KA- 80 kn(1) In Part A, how does increasing the capacitance affect the charging time? How does increasing the resistance affect it? Explain why this aligns with your expectation, considering the definition of time constant. Charging time increases as the capacitance increases because they one directly proportional to each other Q - CV. (2) How do the series and parallel capacitor configurations' charging times differ from those of the individual capacitors alone? Does this match your expectations? Explain your answer. (3) What exactly is it that the time constant measures? Show, using the charging equation, that if the voltage across the capacitor is 63.2% of its maximum that a time equal to RC must have elapsed. (4) How do the series and parallel capacitor configurations' time constants differ from those of the individual capacitors alone? Does this match your expectations? Explain your answer fully. (5) Verify the data in Part B by using the charge and discharge equations to calculate the theoretical final current, maximum voltage, and discharge time. Remember to use your measured values for R and C (not the values they are marked with). Determine the percent difference between each measurement you made in part B and the associated theoretical value