Question

In a magnetic field of 400A per m, the relative permeability of a piece of soft iron is 3000.Find the magnetic induction in the iron at this field strength?

Answer 1

Answer

Magnetic field strength can be given as

$B=\mu_r\mu_0H\\B=(3000) (4\pi \times10^{-7}) (400) \\B=1.5T$