I am studying freestanding dielectric sliding triboelectric generator. Here, dielectric plate will slide over two separated electrode plates generating in each of them some charge because of triboelectric phenomenon. If you connect those two electrodes, electricity can flow. So , this generator in electrical representation will be like voltage and inherent capacitance(created between two electrodes). So, I want to derive those two characteristics, voltage and capacitance formula depending on the position of sliding dielectric plate over other plates.