Chapter 32251P32.47121222CVLI∆afLNMOQP=FHGIKJmaxmaxso ∆VLCICbgafmaxmax....==××=−−20 0100 500100 10020 036HFAVP32.48When the switch has been closed for a long time, battery, resistor, andcoil carry constant current IRmax=ε. When the switch is opened,current in battery and resistor drops to zero, but the coil carries thissame current for a moment as oscillations begin in the LCloop.We interpret the problem to mean that the voltage amplitude of theseoscillations is ∆V, in 121222CVLI∆af=max.FIG. P32.50Then, LCVICVR===×=−∆∆Ωafafejaf afaf2222262220 5001015025050 00 281max...εFVVH.P32.49This radio is a radiotelephone on a ship, according to frequency assignments made by internationaltreaties, laws, and decisions of the National Telecommunications and Information Administration.The resonance frequency isfLC012=π.Thus,CfL==××=−12126 30101 051060802626ππbgej ej..
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