Why is the inductance and capacitor voltage higher than the supply voltage when the circuit resonates

Why is the inductance and capacitor voltage higher than the supply voltage when the circuit resonates

When the series resonance occurs, the voltage on the capacitor or inductor is about Q times of the applied voltage. The inductor and the capacitor have the function of energy storage. When the circuit resonance occurs, it is actually the process that the inductor and the capacitor continuously store energy and then release energy. When the released energy is superimposed with the energy of the original power supply, the voltage will increase, At this time, the inductance voltage is jw0li. The capacitor voltage is I / (jw0c). W0 is the resonant frequency. It can be seen that the current increases, and their voltage does increase. Moreover, when the resonance is of equal amplitude and inverse phase, the inductive reactance equals the capacitive reactance, offsetting each other, and the external equivalent to pure resistance (the minimum impedance), so the current is the largest. The inductance voltage leads the current by 90 degrees, and the capacitor voltage lags the current by 90 degrees, One is in the opposite direction