1.

Relative permeability of a substance is 0.075. Its magnetic susceptibility is ........

Answer»

`0.925`
`-0.925`
`1.075`
`-1.075`

SOLUTION :Relative PERMEABILITY
`mu_(r) = 1 + chi_(m)` but `mu_(r) = K_(m)`
`therefore K_(m) = 1+ chi_(m)`
`therefore chi_(m) = K_(m) - 1 = 0.075 -1 `
`therefore chi_(m) = -0.925`


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