engineering physics MCQ #268

What happens to the impedance of a series LCR circuit when the frequency is increased?

engineering physics MCQ #268

  1. Question 1

    Q1. What happens to the impedance of a series LCR circuit when the frequency is increased?

    • A) It always increases
    • B) It always decreases
    • C) It first decreases and then increases
    • D) It remains the same

    Answer: It first decreases and then increases

    Explanation: The impedance Z = √(R² + (XL - XC)²), which first decreases and then increases as frequency increases.