Experiment 2Q AC Circiuts: (II) The RL & RCL-Circuits

We say “the voltage is in phase with the current” because vR and i are zero at the same time, and they also reach their maxima at the same time. When a capacitor is inserted in a circuit with an alternating current as in equation (1), the current still flows to and from the power supply as the capacitor is alternately charged and discharged. ................
................