For ferromagnetic material, the relative permeability (mu_(r)), versus magnetic intensity (H) has the following shape

Options

A.
B.
C.
D.

Answer

D

Explanation

As `mu_(r)=1 + (I)/(H), I` depends on , H so `M_(r)` increases slowly with H initially further `M_(r)` increases rapidly corresponding to . I / H When I becomes constant (material is fully magnetized), I /H decreases, Hence `M_(r) darr`