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(20 pts.) A 12.5 pF capacitor is connected to a power supply that keeps a constant potential difference of 24.0 V across the plates. A
(20 pts.) A 12.5 pF capacitor is connected to a power supply that keeps a constant potential difference of 24.0 V across the plates. A piece of material having a dielectric constant of 3.75 is placed between the plates, completely lling the space between them. (a) How much energy is stored in the capacitor before and after the dielectric is inserted? (b) By how much did the energy change during the insertion? Did it increase or decrease? (c) By how much does the charge on the plates change
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