An RL low-pass filter consists of a 5.6 mH coil and a 3.3 kO resistor. The output voltage is taken across the resistor. The circuit's critical frequency is
A series resonant band-stop filter consists of a 68 O resistor, a 110 mH coil, and a 0.02 ÁF capacitor. The internal resistance, RW, of the coil is 4 O. Input voltage is 200 mV. Output voltage is taken across the coil and capacitor in series. What is the output voltage magnitude at f0?