I understand how generators work, but I can't for the life of me conceptualize why the current in an AC generator reverses every 180 degrees!!! I understand that, using the right hand rule, it can be seen that the current flows around the coil in a generator in one direction, but I can't see why the current reverses after half a rotation!
I've been looking at the animations on this page to try and figure it out, but I just can't get there.
In addition, I don't understand the concept of how split ring/slip rings work? I know split ring is for direct current, but not really why. For instance, if asked how could I 'explain the difference between a split ring or slip ring'?