A parallel-plate air capacitor of area a180cm2 and plate, Ask an Expert

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A parallel-plate air capacitor of area A=18.0cm2 and plate separation d=2.60mm is charged by a battery to a voltage 68.0 V. If a dielectric material with kappa=3.60 is inserted so that it fills the volume between the plates (with the capacitor still connected to the battery), how much additional charge will flow from the battery onto the positive plate?

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