3.) Determine the energy stored by C. when Ci = 20 /F, C2 = 10 /F. C3 = 14 //F, C.=30 /F, and Vo = 45 V. Vo 4.) A 25-/F capacitor charged to 50 V and a capacitor C charged to 20 V are connected to each other, with the two positive plates connected and the two negative plates connected. The final potential difference across the 25-//F capacitor is 36 V. What is the value of the capacitance of C? 5 .) A 20-//F capacitor charged to 2.0 kV and a 40-w/F capacitor charged to 3.0 kV are connected to each other, with the positive plate of each connected to the negative plate of the other. What is the final charge on the 20-//F capacitor after the two are so connected