engineering physics MCQ #140

The resonant frequency of an LCR circuit is 1000 Hz. If the inductance is doubled, what is the new resonant frequency?

engineering physics MCQ #140

  1. Question 1

    Q1. The resonant frequency of an LCR circuit is 1000 Hz. If the inductance is doubled, what is the new resonant frequency?

    • A) 500 Hz
    • B) 707 Hz
    • C) 1000 Hz
    • D) 1414 Hz

    Answer: 707 Hz

    Explanation: f_res = 1/(2π√(LC)). If L is doubled, f_res becomes 1/√2 times = 1000/√2 = 707 Hz