Question

A rod is inserted as the core in the current-carrying solenoid of the previous problem. (a) What is the magnetic intensity H at the centre? (b) If the magnetization I of the core is found to be 0.12 A m−1, find the susceptibility of the material of the rod. (c) Is the material paramagnetic, diamagnetic or ferromagnetic?

Answer 1

Explanation:

(a) Magnetization intensity ,

$H=1500 \mathrm{A} / \mathrm{m}$

• The end results may be overlooked as the solenoid and the rod are large and we are focused in the intermediate magnetic power.

• The rod's sole role in the magnetic area of the solenoid is to induce magnetisation in the rod, depending on the magnetic properties of the rod.

• There is no influence of the rod on the centre's magnetic strength.  

(b) Core magnetization,

$I=0.12 \mathrm{A} / \mathrm{m}$

We know that  

$I=\chi H_{\iota}$

where

χ The susceptibility of the rod material.

$\chi=\frac{I}{H}$

  $=\frac{0.12}{1500}$        

  $=0.00008$

  $=8 \times 10^{-5}$

(c) The material has paramagnetic effect