ETC EngineeringMCQs
Home › Network Theory › A first-order circuit has time constant 50 ms. After 150 ms, its natural-response magnitude is approximately what percentage of its initial value?
MCQ Practice Question
Network TheoryTransient Analysis

A first-order circuit has time constant 50 ms. After 150 ms, its natural-response magnitude is approximately what percentage of its initial value?

  • A36.8%
  • B13.5%
  • C5.0%
  • D0.67%
Report an error
Correct Answer: C. 5.0%
Explanation: 150 ms equals 3 time constants. e^-3≈0.0498, so about 5% remains.
Reference: Standard network theory: exponential decay numerical
Continue practicing: Network Theory MCQs or browse all MCQs.