Physics
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A tuning capacitor in a 20 kHz radio receiver experiences a peak current of 55 mA with an rms voltage of 7.0 V. Determine the capacitance (C) of this tuning capacitor.
5.1 × 10-7 F
6.3 × 10-8 F
3.1 × 10-8 F
4.4 × 10-7 F