How Does the Energy Stored in a Charged Capacitor Change If the Battery Is Disconnected and the Plates of the Capacitor Are Moved Further Apart?
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Without dielectric, the charge on the plates is Q0=C0V0=(20.0pF)(40.0V)=0.8nC. Since the battery is disconnected before the dielectric is inserted, the plate charge is unaffected by the dielectric and remains at 0.8 nC. c. With the dielectric, the potential difference becomes V=1κV0=12.140.0V=19.0V.
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