Please, take a loot at this circuit:
Obviously, this is a circuit that is very easy to solve using lots of different methods. However, I'm trying to solve it using Nodal Analysis (I'm not sure if it's possible).
I tried to use node B as reference. When I do it, I notice that the voltage from C to B is known (10V). The voltage from A to B is already known (20i). So, there's no equation to find.
I would like to know if this circuit is already "solved" (voltages are known) or if I'm missing something here. I just can't find any useful equation taking B as the reference. Even if I try to find a equation using node A, I can't go forward since I can't find find the current that is passing through the dependent source.