Hey,
Regarding induced currents as a result of a magnet falling through a conductor, I read in a textbook that 'the induced current will always produce a magnetic field which opposes the magnet's magnetic field'. Is this right?
My thinking is this:
At the top of the conductor, i.e. when the magnet (north-pole facing downwards) is just about to fall through, magnet's field lines are cut, so magnetic flux changes to emf is induced. Since magnetic flux has increased, the induced current will want to be in a direction such to decrease the magnetic flux and so would produce a north pole. Hence, the textbook holds here because the induced current's magnetic field would oppose the magnet's.
However, when the magnet is at the bottom of the conductor, magnetic flux decreases so hence the induced current will want to increase magnetic flux and so will induce a south pole to 'attract' the magnet's north pole. Hence, surely the induced current's magnetic field in this case is ATTRACTING the magnet's and not OPPOSING?
Thanks
@uberteknik really appreciate it if you could help me out man!