Answer to Question #65293 in Electric Circuits for Helen

Answer to Question #65293 in Electric Circuits for Helen

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Question #65293

It’s Friday night, and you’ve got big party plans. What will you do? Why, make a
capacitor, of course! You use aluminum foil as the plates, and since a standard roll of
aluminum foil is 30.5 cm wide you make the plates of your capacitor square, each a
30.5 cm by 30.5 cm. You separate the plates with regular paper, which has a thickness
of 0.100 mm and a dielectric constant of kappa = 3.7. What is the capacitance of your
capacitor? If you connect it to a 9 V battery, how much charge is stored on either
plate?

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