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What is the resonant frequency of a series RLC circuit, if R is 47 ohms, L is 1 microhenry and C is 9 picofarads?
53.1 MHz
Resonant frequency (fr) of a series RLC circuit is fr = 1 / (2π√(LC)). With L=1µH and C=9pF, fr = 1 / (2π√(1e-6 × 9e-12)) ≈ 53.052 MHz.
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