The dielectric constant is a macroscopic measurement of how much electrical energy a material can store due to polarization of the molecules that make up the material. Basically, an applied electrical field will cause the molecules in a material to re-align their spatial orientation so as to reduce the field strength in the material.
Now a conductor has electrons that are mobile - they are not tightly bound to their parent atoms so an applied electric field causes the electrons to move. This reduces teh electric field inside the conductor to zero. Hence, the electrons "store" all of the electrical energy due to the appleid electric field. SInce ther eis no restriction on how fast the electrons can move (ignoring relativity for the moment), the conductor can "store" all the energy one can apply. Hence the dielectric constant can be thought of as having an infinite value. However, the dielectric constant really isn't defined for a condutor since to have a dielectric constant implies the material can be electrically polarized, which a conductor cannot be.
2007-11-29 01:55:23
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answer #1
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answered by nyphdinmd 7
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Dielectric Constant Of Metal
2016-10-15 03:46:06
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answer #2
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answered by ? 4
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I am quite sure there is none. If there was a perfect dielectric, it would mean that it would never conduct electricity under any circumstances. the only perfect dielectric would be nothing, the total absence of molecules and atoms. In certain places in time this does exist but the ever roving molecule will eventually change this. The ultimate mean free space!
2007-11-29 01:52:17
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answer #3
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answered by Robert D 4
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For the best answers, search on this site https://shorturl.im/axqQP
A capacitor with a conductive dielectric cannot store separated charge so it's capacitance is zero C = μA/l .. so it looks like μ has to be zero for any given value of A/l. μᵣ for fused quartz = 3.8
2016-04-05 22:56:28
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answer #4
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answered by Anonymous
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