1. The problem statement, all variables and given/known data This problem has two parts, so I might as well inquire about both. https://www.edx.org/static/content-mit-6002x/images/circuits/H4P3%20Thevenin.2b9528ba9f62.png [Broken] The figure above shows a circuit with a linear current-controlled-voltage-source and its Thevenin equivalent model as seen from Port A. Given that I0=2A,Z=2Ω,R1=2Ω,R2=4Ω, Determine the Thevenin voltage VTH and the Thevenin resistance RTH. https://www.edx.org/static/content-mit-6002x/images/circuits/H4P3%20Norton.cbefdbaf69ef.png [Broken] The figure above shows a circuit with a linear voltage-controlled-voltage-source and its Norton equivalent model as seen from Port B. Given that Vo=5V,A=2,R1=1Ω,R2=3Ω,R3=5Ω, determine the Norton current IN and Norton resistance RN. For the first, they want the equivalent Thevenin voltage and resistance, for the second, the equivalent Norton current and resistance. 2. Relevant equations KCL, KVL, Thevenin/Norton, all the standard stuff you'd expect. 3. The attempt at a solution OK, let's start with the second one and work from there, as that is the one I got further on. Firstly, I used KCL between R1 and R2 and got 7.5 V for the value of u, giving me the dependent voltage source's value. I then used KCL at the node above R3 and the dependent voltage source-got -35 volts, which seems weird. Maybe I screwed up on that(I'm checking again but I'm getting the same thing)? After that, I should find the resistance-and using both that and the Thevenin voltage, I should be able to find the Norton current, as Thevenin resistance is equal to Norton resistance. What I'm stuck on is the dependent voltage source... what exactly should I do about that? I know the independent one becomes a short, should I use a test resistance? I thought that was only for when you had only a dependent source. Thanks in advance.