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An iron rod of 0*2cm^2 cross-sectional a...

An iron rod of `0*2cm^2` cross-sectional area is subjected to a magnetising field of `1200Am^-1`. The suscaptibility of iron is `599`. Find the permeability and the magnetic flux produced.

A

` 7.9xx10^(5) TmA^(-1) `

B

`8.0xx10^(22)TmA^(-1)`

C

`7.5xx10^(-4) TmA^(-1) `

D

`7.8 xx 10^(-5) TmA^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
`mu=mu_0 mu_r=mu_0(1+chi_m)( :' mu_(4) = 1+chi_(m))`
`= ( 4pi xx 10^(-7) TmA^(-1))(1+599)=(7.5xx10^(-4)TmA^(-1)`
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