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A bar magnetic made of steel has a magne...

A bar magnetic made of steel has a magnetic moment of `2*5Am^2` and a mass of `6*6g`. If density of stell is `7*9xx10^-3kg//m^3`, what is the intensity of magnetisation?

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Data: `M=2.5 A.m^(2), m=6.8 xx 10^(-3) kg, rho = 7.9 xx 10^(3) kg//m^(3)`
Volume, `V=m/rho`
The intensity of magnetization of the magnet is
`M_(z) = M/V= M.rho/m = 2.5 xx (7.9 xx 10^(3))/(6.6 xx 10^(-3))`
`=2.992 xx 10^(6) A//m`
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