Open the switch to start.
In this episode of curious case (lol), let's take a look at this LC oscillator. We all know that an ideal LC oscillator is an undamped one, since energy sloshes between the inductor and capacitor undissipated. EC, as we know, has ideal L and C; therefore, the LC Oscillations must be undamped. But that strangely isn't the case. Even though there are no parasitics, the output voltage decays to zero.