Hey, just started this topic and I could use some help. Can someone explain the results? I got a bunch of equations and my head is starting to hurt. :grumpy: First question. Find the ammount of energy stored in a 1,000-microfarad capacitor that has been charged to 18 volts. And A 220-microfarad capacitor is being charged through a 330-ohm path from a 21 volt battery. Calculate the time required for the capacitor voltage to reach 14 volts after the final circuit connection is made. Thanks in advance.