(II) A 7.7-μF capacitor is charged by a 185-V battery (Fig. 24–21a) and then is disconnected from the battery. When this capacitor (C₁) is then connected (Fig. 24–21b) to a second (initially uncharged) capacitor, C₂, the final voltage on each capacitor is 15 V. What is the value of C₂? [Hint: Charge is conserved.]

(II) Suppose in Fig. 24–27 that C₁ = C₃ = 8.0μF, C₂ = C₄ = 16μF, and Q₃ = 21μC. Determine the charge on each of the other capacitors.

(II) Answer the same questions as for Problem 25, for the three plates connected as shown in Fig. 24–24. Are the two capacitors thus formed connected in series or in parallel?

Which of the following statements correctly describes the equivalent capacitance $C_{\mathrm{eq}}$ of a circuit where two capacitors $C_1$ and $C_2$ are connected in series, and this combination is connected in parallel with a third capacitor $C_3$?

For the system of capacitors shown in Fig. E$24.16$, find the equivalent capacitance between $b$ and $c$.

You need a capacitance of 50 μF, but you don't happen to have a 50 μF capacitor. You do have a 75 μF capacitor. What additional capacitor do you need to produce a total capacitance of 50 μF? Should you join the two capacitors in parallel or in series?