There is an electric field in the vacuum and insulators of an electric capacitor. In conductors (copper wire)
no electric field. Is there an electric field in distilled water (for example, a Mayer's cell)?
(solid conductor)
to say there is ‘no field’, is derivative from our mathematical convention,
and the fact that our perspective cannot be the internal point inside the solid copper.
Example - if we choose a finite circle the diameter of the wire,
we find there is a field in the diametrical center of a hollow copper wire.
Its confusing to think about, but its more to do with our equation than the physical
properties of solid copper.
(liquid monomolecular conductors)
We must consider this in 2 parts.
1 the absolute charge state of the volume of liquid.
This is its cumulative net charge with respect to the
ground state of the water molecule.
Now, a water molecule does not freely ‘lase’, we are talking about a small
change in excitation states. - but the magnitude of this change is an exponent
of the the greater charge value below. So its affect can be tremendous.
In terms of the molecular groups within the liquid:
there is no discernible change in viscosity or density,
however the surface tension follows a gradient scale.
and surface tangents are attracted to current flow.
The second and more prominent charge value we need to handle is
Our perspective “voltage”, that is: the relative detectable charge from
our choice of perspective. Generally this is taken to be Earth Ground = 0V
Therefore, it is stated that: The charge stored in a volume of water is equivalent
to the relative charge to the power of the absolute charge divided by the number of mols.
This is the maximum value of your “Pure water capacitor”
and from this you can determine mathematically the electric charge produced.
(adjust for ambient electric field parameters to infer the discernible charge from the perspective of your human condition)