An Ideal Parallel-Plate Capacitor Consists of Two Parallel Plates of Area

question 414

Multiple Choice

An ideal parallel-plate capacitor consists of two parallel plates of area A separated by a distance d. This capacitor is connected to a battery and charged until its plates carry charges +Q and -Q, and
The battery is then disconnected. If the separation between the plates is now doubled, the electrical
Energy stored in the capacitor will

• A) quadruple.
• B) be cut in fourth.
• C) not change.
• D) double.
• E) be cut in half.

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