Question: A parallel-plate capacitor with plate area 3.0 cm2 and air-gap separation 0.50 mm is connected to a 12-V battery, and fully charged. The battery is

A parallel-plate capacitor with plate area 3.0 cm2 and air-gap separation 0.50 mm is connected to a 12-V battery, and fully charged. The battery is then disconnected.

(a) What is the charge on the capacitor?

(b) The plates are now pulled to a separation of 0.75 mm. What is the charge on the capacitor now?

(d) How much work was required to pull the plates to their new separation?

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a Use Eq 177 and Eq 178 to calculate the charge b The charge d... View full answer

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