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Intro To Dielectrics
Intro To Dielectrics
26. Capacitors & Dielectrics / Intro To Dielectrics / Problem 1

Consider a 4 nF parallel-plate capacitor with nothing between the plates that is charged by a battery at a potential difference of V. The capacitor stores an energy of 1.02 × 10-5 J. The volume between the plates is totally filled with a sheet of dielectric while the power source is still connected. As a result, the energy-storing capacity of the capacitor is enhanced by 2.78 × 10-5 J. i) Determine V and ii) the dielectric constant (K) of the sheet.

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