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Dielectric inserted between plates of capacitor

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A constant potential difference of 12 V is maintained between the terminals of a 0.25-uF parallel-plate air capacitor.

1.) A sheet of Mylar is inserted between the plates of the capacitor, completely filling the space between the plates. When this is done, how much additional charge flows onto the positive plate of the capacitor? (The dielectric constant k of Mylar is 3.1.)
Express your answer using two significant figures.

2.) What is the total induced charge on either face of the Mylar sheet?
Express your answer using two significant figures.

3.) What effect does the Mylar sheet have on the electric field between the plates? Explain how you can reconcile this with the increase in charge on the plates, which acts to increase the electric field.

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Solution Summary

This solution shows the change of induced charges and electric field between the parallel-plate air capacitor after inserting dielectric material in between.

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