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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.

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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