5555555555 1. A 10 Ω resistor, a 90 mH coil, and a 0.015 μF capacitor are in series across an ac source. The impedance magnitude at 1,200 Hz below fr is ________. (a) 1,616 Ω (b) 161 Ω (c) 3,387 Ω (d) 1,771 Ω
5555555555 3. A 15 Ω resistor, a 220 μH coil, and a 60 pF capacitor are in series across an ac source. What is the bandwidth of the circuit? (a) 138 MHz (b) 10,866 Hz (c) 1,907 Hz (d) 138 kHz
5555555555 14. A 90 Ω resistor, a coil with 30 Ω of reactance, and a capacitor with 50 Ω of reactance are in series across a 12 V ac source. The current through the resistor is ________. (a) 9 mA (b) 90 mA (c) 13 mA (d) 130 mA
5555555555 11. A 6.8 kΩ resistor, a 7 mH coil, and a 0.02 μF capacitor are in parallel across a 17 kHz ac source. The coil's internal resistance, Rw, is 30 Ω . The equivalent parallel resistance, Rp(eq), is ________. (a) 1,878 Ω (b) 18,780 Ω (c) 18,750 Ω (d) 626 Ω
5555555555 9. A 9 mH coil is in parallel with a 0.015 μF capacitor across an 18 kHz ac source. The coil's internal resistance, RW, is 60 Ω. The circuit impedance is ________. (a) 17,340 Ω (b) 1,734 Ω (c) 290 Ω (d) 1,018 Ω