Aparallel plate capacitor with capacitance c is connected to a power supply av, acquiring a charge on its plates. while it is still connected to the power supply, the plate separation is doubled and a dielectric of constant k = 4.20 is inserted into the gap. what is the new charge on the plates in the final state? a) q=0.4769 b) q=2.109 c) q=4.20g d)