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# A parallel plate capacitor has plate area

Question:

A parallel plate capacitor has plate area $25.0 \mathrm{~cm}^{2}$ and a separation of $2.00 \mathrm{~mm}$ between the plates. The capacitor is connected to a battery of $12.0 \mathrm{~V}$

(a) Find the charge on the capacitor.

(b) The plate separations decreased to $1.00 \mathrm{~mm}$. Find the extra charge given by the battery to the positive plate.

Solution: