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AP Physics C: E&M
10.4 Dielectrics
BeginnerMCQConceptual21k
An isolated parallel-plate capacitor filled with a dielectric slab of constant \(\kappa\).
An isolated parallel-plate capacitor filled with a dielectric slab of constant \(\kappa\).
A parallel-plate capacitor with plate area \(A\) and plate separation \(d\) is charged so that the plates carry free charges \(+Q_0\) and \(-Q_0\), and is then disconnected from the voltage source. A slab of linear dielectric material with dielectric constant \(\kappa > 1\) is inserted, completely filling the space between the plates. Which of the following statements and justifications correctly describes the magnitude of the net electric field \(E\) inside the capacitor after the dielectric is inserted?

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