Capacitors

In a parallel plate capacitor, the plate at is grounded and the plate at is maintained at a potential . The space between the two plates is filled with a linear dielectric of permittivity , where is the permittivity of free space. Neglecting the edge effects, the electric field ( ) inside the capacitor is .

The symbols C, D, , and shown in the figure denote capacitor, ideal diode, input voltage, and output voltage, respectively.

Which one of the following output waveforms ( ) is correct for the given input waveform ( )?