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What is the resonant frequency of a parallel RLC circuit if R is 4.7 kilohms, L is 3 microhenrys and C is 40 picofarads?
14.5 MHz
Resonant frequency (fr) of a parallel RLC circuit (assuming high Q) is fr = 1 / (2π√(LC)). With L=3µH and C=40pF, fr = 1 / (2π√(3e-6 × 40e-12)) ≈ 14.529 MHz.
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