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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

17,340 Ω
1,734 Ω
290 Ω
1,018 Ω

Correct Answer: 17,340 Ω

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