Recent content by woodentsick

Hey, thanks for your reply! I looked at some of the MIT videos, and they were very informative, but as far as I know they don't cover the derivations of the equations for alternating current/voltage :(

Hi, PF :) I was self-studying AC circuits, and my main goal right now is to understand impedance. However, before that, I was wondering how one would derive the formulas for alternating voltage (and current), namely http://upload.wikimedia.org/math/5/a/0/5a0ecaa1432c6cdce653a943b4962a21.png...

Ohhh so to fully understand this problem, I'll need to learn about impedance? Well, now I know what's going to be eating up my lunch break! :D Thanks guys, you've been REALLY helpful, and I'll report back once I learn more about electricity! Till then, goodbye! Woodentsick P.S. Delta^2, when...

Hello tiny-tim, Now I get what you mean, but I just want to clarify that I meant all the resistance in the primary circuit was due to the transformer. Because the primary circuit is 12V; 2A the resistance of the transformer will be 12/2 = 6 Ohms. Well, because of the responses from tiny-time...

Hello tiny-tim, Thanks for your reply, but I am afraid I do not fully understand it :(Firstly, how did you get V = I1R1 + V1? Shouldn't V = I1R1 only? And secondly, if you don't mind, could you also explain the next few steps? Thanks so much, Woodentsick

Homework Statement Hey PF! I had a problem that was bugging my mind. We know that in any circuit, the total resistance has to equal the total voltage divided by the total current, right? That is, R=V/I. And we also know that when you have a step up or step down transformer, power is conserved...