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200-volt battery is connected to a 0.50-microfarad parallel-plate, air-filled capacitor. Now the battery is
disconnected, with care taken not to discharge the plates. Some Pyrex glass is then inserted between the
plates, completely filling up the space. What is the final potential difference between the plates? (The
dielectric constant for Pyrex is k= 5.6.)
53 V
16 V
O 22 V
20 V
36 V

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