Magnet through a copper coil - What if poles rotated 90 degress

jtotheroc

I was wondering what voltage or current, if any, would be produced if the basic magnet through a copper coil experiment had the poles rotated 90 degress so north and south faced the top/bottom of the coil rather than the entry/exit points?

The attached image has a basic illustration of this.

Thanks

mfb

In the limit of a perfect coil, there should be no induction due to the symmetry of the problem. A real coil is not perfect (and the same is true for the magnet and its motion), so you will get some induction, but not much.

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jtotheroc	Magnet through a copper coil - What if poles rotated 90 degress Tweet I was wondering what voltage or current, if any, would be produced if the basic magnet through a copper coil experiment had the poles rotated 90 degress so north and south faced the top/bottom of the coil rather than the entry/exit points? The attached image has a basic illustration of this. Thanks

mfb Mentor	In the limit of a perfect coil, there should be no induction due to the symmetry of the problem. A real coil is not perfect (and the same is true for the magnet and its motion), so you will get some induction, but not much.