Permittivity versus conductivity

[wil3]

Would it be fair to say that permittivity corresponds to the opposition of a material to an electric field, whereas conductivity corresponds to the opposition of a material to the first time derivative of the field? It seems like these two concepts should have some sort of quantitative link, as the concept of displacement current almost treats permittivity as resistance, but I can't quite figure out what exactly the relationship is.

If the above is true, then what would be the equivalent of conductivity for magnetic fields? I feel like permittivity and permeability are analogous so I feel like there should be a natural complement to conductivity.

Finally, what are some examples of materials with high permittivity/low conductivity, or vice versa? I'm trying to get a better idea of chemical properties that give rise to the two (I'm aware that permittivity has something to do with polarizability)

thanks in advance for any help

 

[cragar]

Ya Certainly I think the relative permittivity and the conductivity are related.
<br /> \nabla \cdot J=-\frac{\partial \rho}{\partial t}<br />
and
J=\sigma E<br />
Putting this in and using
<br /> \nabla \cdot E=\frac{\rho}{\epsilon_0}<br />