Magnetism

JEE Advanced 2015 Tutorials › Electricity and magnetism questions › Magnetism

A magnetizing field of 1200 A/m produces a magnetic flux of 2.4 ? 10-5 weber in an iron bar of cross-sectional area 0.2 cm2. Calculate the permeability and susceptibility of the bar.

#Physics #Electricity and magnetism

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Manmay kumar Mohanty ·2010-05-05 02:50:20

is it k( suspectibility ) = 4 x 10^-4
and Î¼ ( permeability ) = 1.005 ?????

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sowmya ·2010-05-05 04:22:35

Answer isn't known.How did you do it ?

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Manmay kumar Mohanty ·2010-05-05 04:56:34

I( intensity ) = ma = 10^-50.2 x 10^-4 = 0.5

we have a formula
B = H + 4\pi I
so H = B-4\pi I
hence H = 1200 - 4 x 3.14 x 0.5 = 1193.72

Î¼ ( permeability ) = BH = 12001193.72 = 1.005
and
k( suspectibility ) = IH = 0.5/1193.72 = 4 x 10^-4

NOTE sry i didn't mention the units properly just gave the answer

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