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Question
Choose the correct option:
A magnetising field of 360 Am−1 produces a magnetic flux density (B) = 0.6T in a ferromagnetic material. What is its permeability in Tm A−1?
Options
`1/300`
300
`1/600`
600
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Solution
`1/600`
Explanation:
Calculate permeability `(mu)`
`mu = B/H` ......(1)
Substitute B = 0.6T and H = 360Am–1 in (1)
`mu = 0.6/360`
`mu = 1/600 TmA^-1`
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