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Unformatted text preview: μ r = 10 5 The length of the airgap is g = 5 mm and the total length of the iron is 0.4 m. For the magnet B r = 1.07 (T), H c =800 (kA/m) and the flux density in the air gap is 0.8 (T). Assuming the cross section is uniform, what is the length of the magnet l m ? g iron iron l m magnet Air gap...
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 Spring '09
 TimHogan
 Magnetism, Magnetic Field, 0.4 m, 5 mm

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