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A magnetic field strength (H) 3xx10^(3) ...

A magnetic field strength `(H) 3xx10^(3) Am^(-1)` produces a magnetic field of induction `(B)` of `12piT` in an iron rod. Find the relative permeability of iron ?

A

`10^(5)`

B

`10^(4)`

C

`10^(3)`

D

`10^(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`H=3xx10^(3)A/m,B=12pi T,mu_(r)=?`
`mu_(r)=(mu)/(mu_(0))`
`=(B)/(Hmu_(o))=(12pi)/(3xx10^(3)xx4pixx10^(-7))=10^(4)`
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