4. Three capacitors are connected to an EMF as shown. The capacitors are identical except that the first two have air-filled caps and the last capacitor has a ceramic with x = 3 entirely filling the gap. The capacitance of the ceramic filled capacitor is 6 μF and the voltage across that capacitor is 4 Volts. a. Determine equivalent capacitance of the circuit. # b. Determine the EMF. c. Determine the total energy stored in the circuit. Hint: there is an easier and harder way to do this!

4. Three capacitors are connected to an EMF as shown. The capacitors are identical except that the first two have air-filled caps and the last capacitor has a ceramic with x = 3 entirely filling the gap. The capacitance of the ceramic filled capacitor is 6 μF and the voltage across that capacitor is 4 Volts. a. Determine equivalent capacitance of the circuit. # b. Determine the EMF. c. Determine the total energy stored in the circuit. Hint: there is an easier and harder way to do this!