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27 February, 17:45

A solenoid has 332 turns and a length of 14 cm. If a current of 0.88 A produces a magnetic flux density of 0.28 T in the core of the solenoid, what is the relative permeability of the core material?

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  1. 27 February, 21:28
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    106.83

    Explanation:

    N = 332, l = 14 cm = 0.14 m, i = 0.88 A, B = 0.28 T

    Let ur be the relative permeability

    B = u0 x ur x n x i

    0.28 = 4 x 3.14 x 10^-7 x ur x 332 x 0.88 / 0.14 (n = N / l)

    ur = 106.83
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