Question

The susceptibility of annealed iron at saturation is 5500. Find the permeability of annealed iron at saturation.
A. `1.9 xx 10^(-3)`
B. `6.9 xx 10^(-3)`
C. `3.9 xx 10^(-3)`
D. `7.9 xx 10^(-3)`

Answer 1

Correct Answer - B
`x=5500, mu=?`
`rho=rho_(0)(1+x)`
`=4pixx10^(-7)xx(1+5500)`
`=6.9 xx10^(-3) Wb//Am`