Analysis method of LC oscillating circuit

There are many physical quantities involved in the process of LC electromagnetic oscillation, and the changes of each physical quantity are also very complicated. In the actual analysis process, if we pay attention to the asynchronous changes of electric field (electric field energy, charge, voltage and electric field intensity) and magnetic field (magnetic field energy, current intensity and magnetic induction intensity), and make full use of energy conservation including electric field energy and magnetic field energy to radiate other physical changes, we can quickly find out the changes of various physical quantities and judge the state of the circuit.