An air-filled parallel-plate capacitor has a capacitance of 2.0 pF.  The separation (0.5 mm) of the plates is halved, and a dielectric material (insulating material) is inserted between them.  The “new” capacitance is 16.0 pF.  Calculate the dielectric constant of the insulating material. A. 0.25  B. 0.5  C. 4.0  D. 8.0  E. 16.0

Physics for Scientists and Engineers, Technology Update (No access codes included)
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Chapter26: Capacitance And Dielectrics
Section: Chapter Questions
Problem 26.8P
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An air-filled parallel-plate capacitor has a capacitance of 2.0 pF.  The separation (0.5 mm) of the plates is halved, and a dielectric material (insulating material) is inserted between them.  The “new” capacitance is 16.0 pF.  Calculate the dielectric constant of the insulating material.

A. 0.25

 B. 0.5

 C. 4.0

 D. 8.0

 E. 16.0

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