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Chapter 4: Q20DQ (page 808)

A conductor is an extreme case of a dielectric, since if an electric field is applied to a conductor, charges are free to move within the conductor to set up “induced charges.” What is the dielectric constant of a perfect conductor? Is it , or something in between? Explain your reasoning.

Short Answer

Expert verified

Thedielectricconstantof theperfectconductorisinfinitein the case of absence of applied electricfield

Step by step solution

01

About Induced Charges And dielectric constant

The Dielectric constant (K) of the medium is the ratio of the permittivity of the substance (\varepsilon) to permittivity of the free space

02

Determine at   , or something in between

The answer is E=0 as the equation 24.14 the dielectric constant is given by

whereis the electric field in thevacuumand E is the electricfieldthat applied to theconductor

So thedielectricconstantof theperfectconductorisinfinitein the case of absence of applied electricfield

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Fig. E25.33
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