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A magnetising field of 1600 A/m produces...

A magnetising field of 1600 A/m produces a magnetic flux of `2.4 xx 10^(-5)Wb` in a bar of iron of cross section `0.2"cm"^(2)`. Then permeability of the bar is the equator

A

`7.5 xx 10^(-4) T A^(-1) m`

B

`7.5 xx 10^(-4)T A m^(-1)`

C

`7.5 xx 10^(-3)T A m`

D

`7.5 xx 10^(-2) T A m^(-1)`

Text Solution

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The correct Answer is:
A
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