Okay, yeah that makes sense. So was what I said last time about the excess current can't enter the current source (because the current needs to stay constant), hence it has effectively infinite resistance a good/correct way of thinking about it? Because that's the conclusion I have kind of come...
Okay, I almost understand. Am I correct if I say, no extra current (say if I connected a battery across A and B) can go through the current source because the current source is designed so that it maintains a constant current. So because no extra current can go through it, it appears as if it...
Ah, so an ideal current source has infinite internal resistance, and hence its just normal series and parallel resistors that are left? But I don't understand, how does current go through something with an infinite resistance?
Simple as that, I've uploaded the image. I don't really care about the exact value, I would prefer just to know the method. So how would I find the equivalent resistance between A and B? Note the component in the middle is a constant current source.