What is Oscillatory Circuit?

A circuit which oscillations of any desired frequency is known as oscillations circuit. A simple oscillatory circuit consist of a capacitor (C) and inductance coil (L) in parallel . This electrical system can produce electrical oscillations of frequency determined is charged from a DC source with a polarity.

i) In the position upper plate of capacitor has deficit of electrons.
ii) After the collapsing field has recharged the capacitor begins to discharges current now following in opposite direction.