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A parallel-plate air capacitor is to store charge of magnitude 260pC on each plate when the potential difference between the plates is 45.0V .

A. If the area of each plate is 6.80 cm2, what is the separation between the plates?

B. If the separation between the two plates is double the value calculated in part (a), what potential difference is required for the capacitor to store charge of magnitude 260 pC on each plate?

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