Can anyone explain to me, why the lever arm formula looks like this, and why you're just calculating from what "I" can understand, half of it.

http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/motdct.html

Question

Can anyone explain to me, why the lever arm formula looks like this, and why you're just calculating from what "I" can understand, half of it.

http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/motdct.html

anonymous · Answer

I think I figured out why you're calculating half of it. But how does the area matter to the torque. There was something about how inductions of magnetic fields occur to try and reduce change or something in the lines with that. Does this ring any bells to you?

theeric · Answer

You're looking at the formula$$F=ILB$$?