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What is the resonant frequency of a parallel RLC circuit if R is 4.7 kilohms, L is 5 microhenrys and C is 9 picofarads?
23.7 MHz
Resonant frequency (fr) of a parallel RLC circuit (assuming high Q) is fr = 1 / (2π√(LC)). With L=5µH and C=9pF, fr = 1 / (2π√(5e-6 × 9e-12)) ≈ 23.705 MHz.
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