kHz. In an LC circuit where the capacitance is 220 pF = 2.20×10^(-10) F and the inductance is 1 mH = 0.001 H, the resonant frequency is: f = 1 / (2π × √(2.20×10^(-10) × 0.001)) = 339,319 H ≈ 339.32 kHz. Read more