What is change in the magnetic flux (delta B)? Like on this http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/emfchb.html" [Broken]
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Can somebody help me to determine the direction of the magnetic flux of the coil?is that, something to do with the aligning of the magnetic domains?
How is it possible that increasing the amount of air will change the direction of the beads?These days, most hula hoops have beads in them. Let's pretend that if
the beads move inside the hoop they will generate wind through the hoop.
Let's say if they go clockwise, they generate a wind going in the direction
a screw would go if the beads were turning it. Let's say if you increase
the amount of air going in that same direction through the hoop, the beads
will feel forced to move (so far we have Faraday's law) counter-clockwise
(now we've added Lenz's law).