PhysicsNEET 2020Dia-, para- and ferromagnetism

Magnetism and Matter

An iron rod of susceptibility 599 is subjected to a magnetising field of $1200 A m^{- 1}$ . The permeability of the material of the rod is: ( $μ_{0} = 4 π \times 1 0^{- 7} T m A^{- 1}$ )

A. $2.4 π \times 1 0^{- 4} T m A^{- 1}$ ✓
B. $8.0 \times 1 0^{- 5} T m A^{- 1}$
C. $2.4 π \times 1 0^{- 5} T m A^{- 1}$
D. $2.4 π \times 1 0^{- 7} T m A^{- 1}$

You have the answer. The worked solution — and why the other three were written — is part of a paid pack.

Magnetism and Matter

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