L
S
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Figure 39.1: An LC circuit.
Figure 39.2: Plots vs. time of LC circuit currentI, capacitor voltageVC, inductor voltageVL, capacitor
chargeQ, and inductor magnetic fluxˆB. The current and inductor flux are in phase with each other, as are
the voltage and charge on the capacitor. The voltages on the capacitor and inductor are 180 ıout of phase.