Energy Stored in Capacitors · Physics 2

Physics 2 Quiz

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A parallel-plate capacitor with plate area

A

and separation

d

is connected to a battery of EMF

\mathcal{E}

and fully charged. The battery is then disconnected. A dielectric slab with dielectric constant

\kappa = 3

is then inserted, completely filling the gap between the plates.

By what factor does the energy stored in the capacitor change after the dielectric is inserted?

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