(d) Assume that the source of voltage remains connected to the 4μF capacitor in problem number 1. What will be the increase in charge as a result of the insertion of the sheet of mica?

Delmar's Standard Textbook Of Electricity
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ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter20: Capacitance In Ac Circuits
Section: Chapter Questions
Problem 7PP: A pure capacitive circuit is connected to a 480-volt, 60-Hz power source. An ammeter indicates a...
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Answer (d) 

  1. A certain capacitor has a capacitance of 4μF when its plates are separated by 0.2 mm of vacant space. A battery is used to charge the plate to a potential difference of 500 V and is then disconnected from the system. (a) What will be the potential difference across the plates if a sheet of mica 0.2 mm thick is inserted between the plates? (b) What will the capacitance be after the dielectric is inserted? (c) What is the permittivity of mica? 

    (d) Assume that the source of voltage remains connected to the 4μF capacitor in problem number 1. What will be the increase in charge as a result of the insertion of the sheet of mica?
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