1.

The magnetic susceptibility of a material of a rod is 299. The permeability of the material of the rod is (mu_0=4pixx10^(-7) H m^(-1))

Answer»

`3771xx10^(-5) H m^(-1)`
`3771 xx10^(-6) H m^(-1)`
`3771xx10^(-7) H m^(-1)`
`3771xx10^(-8) H m^(-1)`

Solution :The permeability `(MU)` , permeability of vacuum `(mu_0)` and magnetic susceptibility `(chi)` are RELATED as
`mu=mu_0(1+chi)`
Here , `mu_0=4pixx10^(-7) H m^(-1) , chi`= 299
`THEREFORE mu=4pi xx 10^(-7) H m^(-1) (1+299)`
`=4xx22/7xx10^(-7) xx 300 H m^(-1) = 3771xx10^(-7) H m^(-1)`


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