- #1
cscott
- 782
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A north pole and south pole are separated by some distance (positioned vertically).
Using the discrete version of Ampere's law:
Take a path rectangle with one vertical side completely inside the magnetic field and the other vertical side completely outside the magnetic field.
Where h = height:
[tex]Bh = -\left[(B_{||}\Delta l)_{top} + (B_{||}\Delta l)_{bottom}\right][/tex]
So there is a magnetic field outside the line of the magnets' edge because the RHS doesn't equal 0? Why is the RHS negative?
Using the discrete version of Ampere's law:
Take a path rectangle with one vertical side completely inside the magnetic field and the other vertical side completely outside the magnetic field.
Where h = height:
[tex]Bh = -\left[(B_{||}\Delta l)_{top} + (B_{||}\Delta l)_{bottom}\right][/tex]
So there is a magnetic field outside the line of the magnets' edge because the RHS doesn't equal 0? Why is the RHS negative?
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