A capacitor is composed of 2 plates separated by a sheet of insulating material 2mm thick and of relative permittivity Ɛ. The distance between the plates is increased to allow the insertion of a second sheet of 3mm thick and of relative permittivity Ɛr. If the equivalent capacitance is one-half of the original capacitance, find the value of Ɛr

A capacitor is composed of 2 plates separated by a sheet of insulating material 2mm thick and of relative permittivity Ɛ. The distance between the plates is increased to allow the insertion of a second sheet of 3mm thick and of relative permittivity Ɛr. If the equivalent capacitance is one-half of the original capacitance, find the value of Ɛr

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter27: Capacitors And Batteries

Section: Chapter Questions

Problem 12PQ

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A capacitor is composed of 2 plates separated by a sheet of insulating material 2mm thick
and of relative permittivity Ɛ. The distance between the plates is increased to allow the
insertion of a second sheet of 3mm thick and of relative permittivity Ɛr. If the equivalent
capacitance is one-half of the original capacitance, find the value of Ɛr

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