All Problems

Electric Oscillations

Problem 4.106

How soon does the current amplitude in an oscillating circuit with quality factor \(Q=5000\) decrease \(\eta=2.0\) times if the oscillation frequency is \(v=2.2 \mathrm{MHz} ?\)

Reveal Answer
t=Qπvlnη=0.5 st=\frac{Q}{\pi v} \ln \eta=0.5 \mathrm{~s}