The discussion focuses on solving a circuit problem involving operational amplifiers (op amps) using Kirchhoff's Current Law (KCL). The user expresses confusion about calculating the current Ix and whether it should be included in the KCL equation. The solution provided suggests first calculating the voltages in the circuit and then applying Ohm's Law (V=IR) to find the current Ix. This method clarifies the relationship between voltage and current in the context of the op amp circuit.
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Bahester said:Homework Statement
http://i8.photobucket.com/albums/a45/bahester9/opamps1.jpg
Homework Equations
I know I can use KCL to solve at a node if I was looking for like a voltage. But I'm not sure really about the current, Ix.
The Attempt at a Solution
I know that Ix has to somehow be involved, so I tried to maybe do KCL at the node where Ix is. I know that there should be no current in or out of the op amp, so when I did my KCL equation for that node I got iR3 + iR4 = 0. However, there is no Ix in that equation either so I was confused as to if the equation should instead be iR3 + iR4 + Ix = 0. Then maybe solve for Ix? However I'm getting very confused and I think there's a simple way to do this, but I've confused myself a great deal.