A magnetic field of 104 A/m is produced by a coil. What is the intensity of magnetization of the following materials placed into the coil?
(a) Silver
(b) Vacuum
(c) Air
(d) Palladium
(e) Nickel
the relative permeability of these materials follows.
Silver–0.99998
Vacuum–1.0
Air–1.0000004
Palladium–1.0008
Nickel–600
The magnetic susceptibility of each material is given by ?=µr–1 as follows.
(a) Silver: ? = µr – 1= 0.99998 – 1 = –0.00002
(b) Vacuum: ?= µr – 1 = 1.0 – 1.0 = 0
(c) Air: ?= µr – 1 = 1.0000004 – 1.0 = 0.0000004
(d) Palladium: ? = µr – 1 = 1.0008 – 1.0 = 0.0008
(e) Nickel: ? = µr – 1 = 600 – 1.0 = 599
The intensity of magnetization of each material is given by M=?H as follows.
(a) Silver: M =?H = –0.00002(104 A/m) = –0.2 A/m
(b) Vacuum: M =?H = 0(104 A/m) = 0 A/m
(c) Air: M = ?H= 0.0000004(104 A/m) = 0.004 A/m
(d) Palladium: M =?H = 0.0008(104 A/m) = 80 A/m
(e) Nickel: M =?H = 599(104 A/m) = 599 × 104 A/m
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