A 2.41microF and a 7.38microF capacitor are connected in series across a 30.0-V battery. A 10.3microF capacitor is then connected in parallel across the 2.41-microF capacitor. Determine the voltage across the 10.3-F capacitor. How do i approach this question. do i start by finding the total energy produced by the capacitors? since E=1/2 CV^2 .