A parallel-plate capacitor has capacitance C = 15.7 pF when the volume between the plates is...

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Physics

A parallel-plate capacitor has capacitance C = 15.7 pFwhen the volume between the plates is filled with air. The platesare circular, with radius 2.50 cm. The capacitor is connected to abattery and a charge of magnitude 28.0 pC goes into each plate.With the capacitor still connected to the battery, a slab ofdielectric is inserted between the plates, completely filling thespace between the plates. After the dielectric has been inserted,the charge on each plate has magnitude 45.0 pC.
(a) What is the dielectric constant K of thedielectric?
(b) What is the potential difference between the plates beforeand after the dielectric has been inserted?
(c) What is the electric field at a point midway between theplates before and after the dielectric has been inserted?

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4.4 Ratings (671 Votes)

Capacitance Co 1571011 F Area A pir2 00019625 m2 As the potential difference between the plates V remains samethe increase in capacity due to insertion of dielectric results in increase in charge The See Answer

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