Question: When a parallel-plate capacitor has air between its plates and is connected to a (12.0-mathrm{V}) battery, its capacitance is (33 mathrm{nF}). The capacitor is then

When a parallel-plate capacitor has air between its plates and is connected to a $12.0-\mathrm{V}$ battery, its capacitance is $33 \mathrm{nF}$. The capacitor is then submerged in distilled water. What is the charge on the plates

(a) if the capacitor is submerged with the battery connected and

(b) if the battery is removed before submersion?

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