All Problems

Electric Oscillations

Problem 4.106

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

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