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If relative permeability of iron is 2000,its absolute permeability is SI unit is

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If relative permeability of iron is 2000,its absolute permeability is SI unit is
A. `8pi xx 10^(-4)`
B. `8pi xx 10^(-3)`
C. `800//pi`
D. `(5xx10^(9))//pi`
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1 Answer

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Correct Answer - A
`mu_(r)=2000,mu=?`
`mu_(r)=(mu)/(mu_(0))`
`therefore mu=mu_(r)mu_(0)`
`=2000xx10^(-4)Wb//Am`
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