A13.5-ω resistor, 15.0-mh inductor, and 120-µf capacitor are connected in series to a 40.0-v (rms) source having variable frequency. if the operating frequency is twice the resonance frequency, find the energy delivered to the circuit during one period.

In the circuit, the switch s has been open for a long time and r = 125 kohm. it is then suddenly closed. (a) determine the time constant before the switch is closed. s (b) determine the time constant after the switch is closed. _ s (c) let the switch be closed at t = 0. find the current in the switch as a function of time. (use t for time. express your answer in milliamps and seconds.) i(t) =_