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A 13 pF capacitor is connected in series with a 5 pF and 9 pF capacitor...

A 13 pF capacitor is connected in series with a 5 pF and 9 pF capacitor that are connected in parallel. The three capacitors are connected to a 26 V battery. (Show all your work!) A) What is the equivalent capacitance of the circuit? B) How much charge is on the 13 pF capacitor? C) What is the potential difference across the 5 pF capacitor?

D) A parallel plate capacitor of plate area A and plate separation d is fully charged using a battery of emf=V. While connected to the battery the plates are pulled apart until the new separation is 3d. Find the change in potential energy when you pull the plates apart.

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