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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
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5555555555 21. 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 17. A 470 Ω resistor and a coil with 125 Ω inductive reactance are in parallel. Both components are across a 15 V ac voltage source. Current through the inductor is ________. (a) 152 mA (b) 32 mA (c) 12 mA (d) 120 mA
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- 5555555555 7. A 24 Ω resistor, an inductor with a reactance of 120 Ω, and a capacitor with a reactance of 120 Ω are in series across a 60 V source. The circuit is at resonance. The voltage across the inductor is ________. (a) 60 V (b) 660 V (c) 30 V (d) 300 V
- 5555555555 10. A 200 Ω resistor, a coil with 30 Ω of reactance, and a capacitor of unknown reactance are in series across an ac source. The circuit is at resonance. Circuit impedance ________. (a) is 230 Ω (b) is 170 Ω (c) is 200 Ω (d) cannot be determined