You make a capacitor by cutting the 145 cm--diameter, Ask an Expert

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You make a capacitor by cutting the 14.5 cm--diameter bottoms out of two aluminum pie plates, separating them by 3.30mm , and connecting them across a 6.00-V battery.

a) What's the capacitance of your capacitor?

b) If you disconnect the battery and separate the plates to a distance of 3.50cm without discharging them, what will be the potential difference between them?

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