12. The capacitors C1and C2can be used in four different ways: (1) C1only; (2) C2only; (3) C1and C2in parallel; and (4) C1and C2in series. (a) The smallest oscillation frequency is fLC C3122621212 10102060 10=+=×××=×−−−ππbgchch...HF+5.010FHz6. (b) The second smallest oscillation frequency is ()211117.1 10 Hz221.0 10 H 5.0 10 FfLC−−===×ππ××. (c) The second largest oscillation frequency is
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