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A domain in a ferromagnetic substance is...

A domain in a ferromagnetic substance is in the form of a cube of side length 1 `mu`m. If it contains `8 xx 10^(10)` atoms and each atomic dipole has a dipole moment of `9 xx 10^(-24) Am^(2)`, then magnetization of the domain is

A

`7.2 xx 10^(5) Am^(-1)`

B

`7.2 xx 10^(3) Am^(-1)`

C

`7.2 xx 10^(9) Am^(-1)`

D

`7.2 xx 10^(12) Am^(-1)`

Text Solution

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The correct Answer is:
A
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