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A parallel plate capacitor has a capacitance of 1.5 microFarad with air between the plates. The capacitor is connected to a 12 V batter and charged. The battery is then removed. When a dielectric is placed between the plates, a potential difference of 5.0 V is measured across the plates.
a) What is the dielectric constant of the material?
b) What happened to the energy storage in the capacitor: increased, decreased, or stayed the same.
c) By how much did the energy storage of this capacitor change when the dielectric was inserted?
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