Question

What is the unit of magnetic intensity?

Answer 1

Determine the unit of magnetic intensity.

Magnetic Intensity:

1. Once a magnet is placed in a magnetic field, its magnetic moment changes.
2. Magnetization Intensity is defined as the change in the magnetic moment per unit volume.

A formula for Magnetisation Intensity is as follows:
$I=\frac{M}{V}$

Magnetic moment, $M=mx$

Volume,$V=Ax$

$$\begin{gathered} I=\frac{mx}{Ax} \\ \Rightarrow =\frac{m}{A} \end{gathered}$$

where,

• m = pole strength.
• A = area of cross-section.
• x = length of the magnet.
• I = intensity of magnetization.

Hence, Tesla is the SI unit of magnetic field strength.