You will construct a simple RC series circuit using a battery (actually an 8 V power supply), a capacitor (C = 0.019 F), a resistor (R = 3 k?), and a deadman switch (Sw). (You may use the value stamped on the capacitor. However, use the ohmmeter setting of the multimeter to accurately determine the value of the resistance.) The potential across the capacitor will be monitored using the DC voltage setting of the multimeter.

For an initially uncharged capacitor, the voltage across the capacitor is given by Vc = Vm (1 - e -t/? ) Vm is the maximum voltage across the capacitor which occurs as t goes to infinity. ? = RC is the time constant of the circuit.

DATA A. Raw data for the Resistive Current Circuit Experiment. time (105) voltage (v) 0 0.3 10 1.059 0 533 20 1.925 30 5.37 30 2.559 60 7-19 23 3233'} 7-44 60 4.46 180 7.59 70 4.86 210 7.7 80 5.25 240 7.78 90 5.57 100 5.84 Table 2: raw data of maximum 110 6.14 over 1305 interval 120 6.33 Table I: raw data of maximum over 105 interval time (10s) voltage (v) 0 800 time (30s) Column1 10 6.95 0 1.03 20 6.14 30 0.7 30 5.44 60 0.47 40 4.72 120 325.1 50 4.13 180 221.2 60 3.62 210 153.7 70 3.16 240 106.9 80 2.77 90 2.43 Table 4: raw data of depressed capaci- 100 2.06 tor over 30s interval 110 1.82 120 1.6 Table 3: raw data of depressed capacitor over 10s interval