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The energy stored in a capacitor is given by Wc (t)=(1/2)Cv^2 (t). If vc(t) is a dc voltage, thenthe energy stored is also a constant.
5 V Fig. 2. A simple RC circuit used for the dc portion of this project. 1 ΚΩ www 27 W Capacitor 22 pF 100 nF 100 μF 22 pF 1 kn Fig. 3. The dc RC circuit implemented on a breadboard. The red wire goes to the +5 V on the UNO board. The black wire goes to the GND of the UNO board. The circuit is constructed with the 100 µF capacitor to illustrate correct polarity. 1. Install the 22 pF capacitor in the circuit in Fig. 2. Measure the voltage across the capacitor. Record the value in a table like Table 1. Then calculate and record the energy stored in the capacitor. Be sure to use proper engineering notation and correct units. 2. Repeat step 1 with the 100 nF capacitor installed. 3. Repeat step 1 with the 100 uF capacitor installed. Table 1. Measured capacitor voltages for the circuit in Fig. 2 and the energy stored in the capacitor for each case. Measured Voltage Calculated Energy Stored