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What is the resonant frequency of a parallel RLC circuit if R is 4.7 kilohms, L is 90 microhenrys and C is 100 picofarads?
1.68 MHz
Resonant frequency (fr) of a parallel RLC circuit (assuming high Q) is fr = 1 / (2π√(LC)). With L=90µH and C=100pF, fr = 1 / (2π√(90e-6 × 100e-12)) ≈ 1.677 MHz.
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