ETC EngineeringMCQs
Home › Network Theory › At the half-power frequencies of a series RLC circuit, the current magnitude is approximately what fraction of its resonant maximum value?
MCQ Practice Question
Network TheoryResonance

At the half-power frequencies of a series RLC circuit, the current magnitude is approximately what fraction of its resonant maximum value?

  • A0.5
  • B0.707
  • C1
  • D1.414
Report an error
Correct Answer: B. 0.707
Explanation: At the half-power points, power is half its maximum value, so current magnitude is 1/sqrt(2)≈0.707 of the resonant current.
Reference: Standard network theory: half-power frequencies
Continue practicing: Network Theory MCQs or browse all MCQs.