Question

1.The resonant frequency of an RCL circuit is 3.0 kHz, and the value of the inductance is 5.0 mH. What is the resonant frequency (in kHz) when the value of the inductance is 1.5 mH?

2. Part a of the drawing shows a resistor and a charged capacitor wired in series. When the switch is closed, the capacitor discharges as charge moves from one plate to the other. Part b shows the amount q of charge remaining on each plate of the capacitor as a function of time. In part c of the drawing, the switch has been removed and an ac generator has been inserted into the circuit. The circuit elements in the drawing have the following values: R=12.0 Ω, V_rms = 30.0 V for the generator, and f = 385 Hz for the generator. The time constant for the circuit in part a is τ = 3 x10^-4 s. What is the rms current in the circuit in part c?

Answer 1