A parallel-plate capacitor has plates with an area of 405 cm2and an air-filled gap between the plates that is 2.25 mm thick.The capacitor is charged by a battery to 575 V and then is disconnected from the battery. (a) How much energy is stored in thecapacitor? (b) The separation between the plates is now increasedto 4.50 mm. How much energy is stored in the capacitor now?(c) How much work is required to increase the separation of theplates from 2.25 mm to 4.50 mm? Explain your reasoning
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A parallel-plate capacitor has plates with an area of 405 cm2
and an air-filled gap between the plates that is 2.25 mm thick.
The capacitor is charged by a battery to 575 V and then is disconnected from the battery. (a) How much energy is stored in the
capacitor? (b) The separation between the plates is now increased
to 4.50 mm. How much energy is stored in the capacitor now?
(c) How much work is required to increase the separation of the
plates from 2.25 mm to 4.50 mm? Explain your reasoning
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