A more physically meaningful term is the equivalent conductivity , which considers the concentration number of ions generated by each compound in solution. The amount of capacitance is directly proportional to the surface area of the electrode and indirectly proportional to the dielectric thickness. The high volumetric efficiency of an electrolytic capacitor is due to its enhanced plate surface area and a very thin dielectric layer. Current is passed by the transport of oppositely charged ions. This is formally known as Kohlrausch's law of Independent Migration of Ions and applies at infinite dilution.
Transport numbers vary somewhat with temperature and concentration.
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