An iron rod of susceptiblity 599 is subjected to a magnetising field of 1200 A/m . The permeability of material of rod is: (`mu_0 = 4 pi x 10^(-7) Tm A ^-1)

Options

A. `2.4 pi xx 10^(-4) T m A^(-1)`
B. `8.0 xx 10^(-5) T m A^(-1)`
C. `2.4pi xx 10^(-5) T m A^(-1)`
D. `2.4 pi xx 10^(-7) T m A^(-1)`

Answer

A

Explanation

`chi_(m)= 599`
`mu_(r) =1 + chi_(m)= 600`
`mu= mu_(r) mu_(0)`
`mu= 600 xx 4pi xx 10^(-7)`
`mu= 2400 pi xx 10^(-7)`
`mu= 2.4 pi xx 10^(-4) T m A^(-1)`