Question

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. 0.904Wb
B. `1.81xx10^(-5)Wb`
C. `0.904xx10^(-5)Wb`
D. `5.43xx10^(-5)Wb`

Answer 1

Correct Answer - B
(b) As, `mu-mu_(0)(1+x) or 4pixx10^(-1)(1+599)`
`B=muH=7.536xx10^(-4)xx1200T`
`thereforeHence, " " f=BA=7.536xx10^(-4)xx1200xx0.2xx10^(-4)Wb`
`=1.81xx10^(-5)Wb`