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Author Question: A 200-volt battery is connected to a 0.50-microfarad parallel-plate, air-filled capacitor. Now the ... (Read 113 times)

Marty

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on: Jul 28, 2018
A 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.)

Question 2

Regarding the Earth and a cloud layer 800 m above the Earth as the plates of a capacitor, calculate the capacitance if the cloud layer has an area of 1.0 km2 . If an electric field of 2.0  106 N/C makes the air break down and conduct electricity (lightning), what is the maximum charge the cloud can hold?


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uniquea123

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Reply #1 on: Jul 28, 2018
Answer to Question 1

36 V

Answer to Question 2

11.1 nF, 17.7 C


Marty

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Reply #2 on: Jul 28, 2018
Thank you!


uniquea123

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Reply #3 on: Jul 28, 2018
Always glad to help...


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