old SECOND order final exam question
3,759 views · Published 11 April 2013 · 8:48 · Indexed 10 November 2026
Channel: rolinychupetin L. R. Linares · 2013 · Education
In this RLC circuit, what's special is that there is an AC source before the switches operate. The circuit was, by definition in AC-SS, so we used phasors to find the current in the inductor and the voltage in the capacitor ... as phasors. Then we wrote that current and that voltage as functions of time. To find ILo and Vco, we "just" evaluate those two functions of time at the moment when the switches operate ... however, what makes this problem even more challenging, is that the time of operation is not given directly but as "the switches operate when the voltage in the source raises halfway between zero and its peak value", so we had to find out that time that was, tx. Good luck!
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