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A core of relative permeability 400 sits in a field with H = 2000 A/m. Its magnetisation is about:
A2 x 10^3 A/m
B8 x 10^5 A/m
C4 x 10^7 A/m
D1 x 10^2 A/m
Answer & Solution
Correct answer: B. 8 x 10^5 A/m
M = (mu_r - 1) H = 399 x 2000, which is about 8 x 10^5 A/m.
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