Direction of mmf for a rotating magnetic field (AC motors)

1. The problem statement, all variables and given/known data
Here is a slide from our class notes:

What I don’t get is how we can get the direction of the mmf.

3. The attempt at a solution
I tried using the right hand rule:
http://ift.tt/1lMwXMO

Since the current from the as winding is negative, the current goes into the page so my thumb points to the left. Is this how you get it? Does this mean the north pole is on the left side since my thumb points to the north pole? Also, does the winding loop from as to as’? That is the assumption I made and it is why I curled my hands the way I did in the picture.

http://ift.tt/1ny9hu4

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