Yes, this was the first thing I stated when I started studying the circuit, the Capacitor has been a long time.Before you go any further, figure out what both the voltage and current are for the capacitor for when the switch is just closed and after it has been closed for a long time.
What do you refer with KCL, english is not my first language, so many abreviatures are strange for me.While your equation might be KCL around the loop that includes those three components, that isn't the only loop that has to be solved for.
You only gave the capacitor for right after the switch is moved, which is critically important. But you should also determine the capacitor current just after the switch is moved as well as the capacitor voltage and current a long time after the switch is moved. These provide check values that your solution has to agree with.Yes, this was the first thing I stated when I started studying the circuit, the Capacitor has been a long time.
This is an English-only forum and you gave no hint that English was your second language. I'm not a mind reader and I don't know what your native language is or what abbreviations you are and aren't familiar with. You English seems just fine.What do you refer with KCL, english is not my first language, so many abreviatures are strange for me.
Whenever you have a switched circuit with a *single* energy storage element (L or C) and no impulsive currents or voltages, there are a few things to realize that can simplify the solution:I have to find vc(t)
Hi,Hi Everyone, I'm doing this excersice, I have to find vc(t)
View attachment 218060
I already could find vc(o) wich is 46V, but I'm having trouble when it connects to the second part of the problem.I tried to read the loop as vc(t)+vR3(t)+vR4(t)=0 but then i can't find a clear path to keep studying this circuit.
Well perhaps my previous post was a tad redundant then.He gave the relevant initial condition in the initial condition (and it's contained in the material you quoted). The initial voltage on the capacitor, just after the switch is thrown, is 46 V. He has also given a loop equation for one of the two essential loops, though whether or not it is correct depends on the assigned polarities of the voltages across the resistors, which had not been given. He needs another equation, which can either be due to KVL around an independent loop or KCL at an independent and non-trivial junction.
He's also asked about doing a source-transformation on part of the circuit, which is a very reasonable thing to do, but has been quiet since. Has the due date passed?
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