2. A spherical shell of radii a and b has a relative permeability Km = /o...
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2. A spherical shell of radii a and b has a relative permeability Km = µ/µo for a ≤ r ≤ b. There is vacuum everywhere else. It is placed in a previously uniform magnetic field Ho = Ho2. Show that the "shielding factor," that is, the ratio H₁/H, where H; is the magnetic field in the cavity, is given by 9Km[(Km + 2)(2km + 1) − 2(Km − 1)²(a/b)³]¯¹. 2. A spherical shell of radii a and b has a relative permeability Km = µ/µo for a ≤ r ≤ b. There is vacuum everywhere else. It is placed in a previously uniform magnetic field Ho = Ho2. Show that the "shielding factor," that is, the ratio H₁/H, where H; is the magnetic field in the cavity, is given by 9Km[(Km + 2)(2km + 1) − 2(Km − 1)²(a/b)³]¯¹.
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Related Book For
Fundamentals of Applied Electromagnetics
ISBN: 978-0132139311
6th edition
Authors: Fawwaz T. Ulaby, Eric Michielssen, Umberto Ravaioli
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