Can't understand why the unit of Reluctance is At/Wb

1. May 6, 2016

1. The problem statement, all variables and given/known data
I can't figure out why the unit of Reluctance is At/Wb and not (At/Wb)m2
This is what I have from my text book, with the red oval area being the part that I'm totally confused about

2. Relevant equations

3. The attempt at a solution
So the m/m cancels out to 1 making it
R=1/(Wb/At·m2)
which is = (At·m2)/Wb
then I have no idea what happened so that m2 vanished and R became At/Wb

I can't sleep scratching my head T_T
Thanks a bunch!

2. May 6, 2016

cnh1995

As your book says, reluctance is analogous to resistance in electrical circuits. Similarly, flux is analogous to current and mmf (Ampere turns) is analogous to voltage.

3. May 6, 2016

Staff: Mentor

Note the division operator:

The underlined bit is in the denominator of the denominator, so to speak. Hence it can be "promoted" to the numerator of the overall expression.

4. May 6, 2016