I have a parallel-plate capacitor, the plates of which are covered by a thin insulating layer. In the gap between the 2 insulated plates, I have an ionic solution of high conductivity (~5 S/m and dielectric constant = 75). If I apply an AC accross the 2 plates, say 5 V (@ 1KHz), how would the electric field be distributed within this capacitor ?
I understand that a perfect conductor has charges only on the surface, and a perfect insulator tends to contain most of the electric field. But I'm not sure, how a lossy dielectric (the ionic solution) behaves under the action of an applied electric field. Theoritically, I would assume that most of the electric field would be concentrated within the thin insulation coating layer over the metal plates, and very little electric field in the lossy solution region. Am i correct in assuming that. Please correct, me if I'm wrong.
I understand that a perfect conductor has charges only on the surface, and a perfect insulator tends to contain most of the electric field. But I'm not sure, how a lossy dielectric (the ionic solution) behaves under the action of an applied electric field. Theoritically, I would assume that most of the electric field would be concentrated within the thin insulation coating layer over the metal plates, and very little electric field in the lossy solution region. Am i correct in assuming that. Please correct, me if I'm wrong.