Faraday paradox redux
- From: Salmon Egg <SalmonEgg@xxxxxxxxxxxxx>
- Date: Sun, 14 Sep 2008 22:18:12 -0700
Consider a planar square loop of wire in a horizontal plane. To be
specific, assume the length of each side is one meter. Assume that a
pair of strip magnets, say 0.5 cm thick by 5 cm by 20 cm is centrally
placed above and below the wire making up one side of the square. The 5
by 20 faces are horizontal. The strips are magnetized in the thickness
direction (vertically). The combination puts the wire under the strips
in a vertical magnetic field. A magnetic yoke is used to restrict the
magnetic field mostly to the gap at the wire or inside the yoke.
If this whole combination is rigidly moved horizontally normal to the
wire in the magnetic field, is an emf induced in the loop?
Compare to the rotating Faraday disk consisting of two magnets cemented
to the conducting disk as it rotates.
Bill
.
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