Available Voltage and Almost No Current Phenomena

[Mozart]

So, do you think we should use PEG cell (or water battery) instead of capacitor in an LC circuit, provided that there will be a matching impedance ? … I mean if there is a “self charging” capacitor (aka PEG cell) the LC will self oscillate for as long as “capacitor” is able to provide electric output ?
What method can we use to determine the frequency in such circuit and use appropriate length of wire ?