Recent content by R0CC0

Homework Statement I've attached the question. So I'm not sure which method should be used to solve this. I was thinking superposition, but the voltage supplies are are both at the same ω value. Homework Equations v(t) = Vmaxcos(ωt + \phi) ZL = jωL ZC = 1/jωL The Attempt at a Solution convert...

Ahh ok that's actually really easy now that I see how it works. I never understood how the initial (0+) condition worked before. Thanks for all the help :)

Ok, I'll remember that for next time. I got i(1) = 4.415mA

Ok so the initial current immediately after switching will be 12mA? Therefore B will equal 12x10-3? Thus i(t) = 12x10-3e-t?

Ignore this post I did it before I saw your last one sorry Actually sorry I see where I went wrong that should be i(∞) = 0 = A But that will still give me A+B=0 initially thus giving B = 0??

sorry that was meant to be i(∞) = 0 = B i(0+) is what I want to know how to work out.

Homework Statement Ok so I have attached the question I am working on. Basically when I have the circuit before or after switching in steady state I believe the current will equal zero. However if this is the case, how do I determine what happens immediately after switching? Homework...

Ok awesome, I think I understand now. Thanks heaps :) I'll go try another transient with an inductor and see how i go.

Ahh of course, I then thought that went in series with the 2 ohm, but if I use source transformation I get two parallel 2ohm resistance, thus giving me two separate branches. Thanks that gets me the right answer I think. i(0) = 3A (initially) Thanks heaps for your help. :)

Thanks that makes sense. I remembered that for capacitors, just forgot for inductors. So that would then give me 4Ω||4Ω (parallel) then in series with the 2Ω, which would then give me a total 4Ω resistor. And since current runs through each resistor in series equally that gives me 24/4 = 6A...

I didn't think it was. I just don't know how to sub the inductor into it. Ahh so the initial voltage through the resistor is zero! Do I then treat that branch as if it is no longer connected? Sorry you are probably putting the answer pretty much in front of me and I'm not seeing it...

Does io(0-) = 4.8 Amps sound better? 6 was a typo. I went 12x(4/10). Total current x resistance of interest/total resistance Yeah definitely forgot to put that one in iL(∞) = 0 So that would give me an answer of io(t) = 4.8e-2t ?? Is that right? I'm not sure how the inductor would...

1. The problem statement See attached question - So I have this inductor transient question and can't seem to get the right answer. Basically I don't know how to determine the current in steady state after switch operation.Homework Equations tau = L/C iL = a+be-t/tau V=IR The Attempt at a...

actually I worked it out, it was correct, they just wanted it in MeV

Righto Got it now. Thanks!:smile: