I think there may be a couple of mistakes in the referenced video:

1) At least two of the slides state 1 Weber = 100,000,000 lines but narrorator says, "100,000". One of these must be wrong (i.e. I don't have one of my old textbooks with me

2) The narrorator uses the phrase A*t (Amp*turns) but describes this as Amps X TIME. I believe "t" in this case is an integer number of turns not time.

This site and the videos, though, are a great resource and one I will return to often!!

 

This one slipped under the radar.

Thanks for taking the time to give feedback. I'll have a look over the weekend at the said video and give some comments accordingly.

Dave