Answer to Question #37303 in Electric Circuits for edwin
The capacitors C1 = 3.00 µF, C2 = 6.00 µF and C3 = 4.00 µF are fully charged; the capacitor C2 has a plate charge of 18.0 µC. What is the voltage across the capacitor C3?
Unfortunately, the statement of your question is a bit confusing.
How capacitors are connected? Please, give us the details so we could help you.