Capacitor Stored Energy and Dielectrics
A parallel-plate capacitor with plate area A and separation d is filled with a dielectric of constant κ. The capacitor is charged and then isolated from the charging source. If the dielectric is subsequently removed, by what factor does the energy stored in the capacitor change?
A
Increases by a factor of κ
B
Increases by a factor of κ²
C
Decreases by a factor of κ
D
Remains unchanged
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