Source Free RC Circuits || First Order Circuit || Examples 7.1 || Practice Problem 7.1 || LCA 7.2(1)

(English) Examples 7.1 || Practice Problem 7.1 (Alexander & Sadiku)
ERROR: at time 14:52, Vx should be 9e^ - 0.25t V (instead of 9e^ -0.5t V),
similarly ix should be 0.75 e^ -0.25t (instead of 0.75e^ -0.5t)
This video explains source free RC circuits in very simple way. Here we discuss examples 7.1 and 7.2 and also solve practice problems 7.1 and 7.2.
A source-free RC circuit occurs when its dc source is disconnected. The energy stored in the capacitor is released to the resistors.
Consider a series combination of a resistor and an initially charged
capacitor,
Example 7.1: In Fig. 7.5, let vc(0) = 15 V, Find vc, vx, and ix
Practice problem 7.1 : Refer to the circuit in Fig. 7.7. Let vc(0)=60V. Determine vc, vx, and I0.
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