A Parallel-Plate Capacitor Is Charged by a Battery and Then

question 49

Multiple Choice

A parallel-plate capacitor is charged by a battery and then the battery is removed and a dielectric of constant K is used to fill the gap between the plates. Inserting the dielectric changes the energy stored by a factor of

• A)1/K.
• B)K.
• C)2.
• D)K - 1.
• E)1 (no change).

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