What is the dielectric constant of the ideal (no resistance) metal and what is the physical meaning of it?
The dielectric constant of a material is the ratio of electric field permittivity of the material to that of the vacuum. The dielectric constant of the metals is equal to infinity. because in the presence of the electric field, the net electric field inside the metal is zero, so the value of dielectric constant for metal shall be infinite. In other words, permittivity is a measure of how an electric field is affected by, a dielectric medium. metals completely negate the electric field inside their bulk. which is infinite resistance to setting up of field and hence infinite permittivity. hence infinite dielectric constant
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