Four simulations represent parallel plate capacitors. You can click-drag and observe the electric potential at that point. Note: There is a 1-5% intrinsic error in the calculation of charge.
For which capacitors would you expect the effect of fringing to be minimal, i.e. the capacitance is C=e0A/d?
Capacitors 3 and 4.
See Giancoli-PA: 17-7, Giancoli-SE: 24-1.
Physlet problem authored by Mario Belloni.