APFIVE Energy in an Isolated Capacitor System
Two identical capacitors are charged to the same potential difference, V, and then disconnected from the charging source. Each capacitor initially stores energy U₀. If the plate separation of one capacitor is then reduced to half its original distance, what is the total energy stored by the two capacitors?
A
U₀ + U₀ = 2U₀
B
U₀/2 + U₀ = 3U₀/2
C
U₀ + 2U₀ = 3U₀
D
U₀ + U₀/2 = 3U₀/2
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