48. An RC high-pass filter consists of a 0.2 µF capacitor and a 220 Ω resistor. The output is taken across the resistor. The circuit’s critical frequency is_____________? September 7, 2025 by Admin A. 723 Hz B. 7,234 Hz C. 362 Hz D. 3,617 Hz ✅ The correct answer is option D.
