### Determine the new capacitance

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##### Reference no: EM13292218

two sheets of aluminum foil have a separation of 1.20mm a capacitance of 9.7pF and are charged to 13.0v

a) calculate the plate area

b) the separation is now decreased by 0.10mm with the charge held constant. Find the new capacitance

c) By how much does the potential difference change explain how a microphone might be constructed using this principle

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