What is the Difference Between Magnetic Intensity and Intensity of Magnetisation

The key difference between magnetic intensity and intensity of magnetisation is that magnetic intensity refers to the forces that the poles of a magnet experience in a magnetic field, whereas the intensity of magnetisation refers to the change in the magnetic moment of a magnet per unit volume.

The term magnetic intensity is a magnetic phenomenon that is useful as a quantity in describing a magnetic field. The term intensity of magnetisation, on the other hand, explains the extent to which a specimen is magnetized when it is placed in a magnetizing field.

1. Overview and Key Difference
2. What is Magnetic Intensity
3. What is the Intensity of Magnetisation
4. Magnetic Intensity vs Intensity of Magnetisation in Tabular Form
5. Summary – Magnetic Intensity vs Intensity of Magnetisation

What is Magnetic Intensity

Magnetic intensity is a magnetic phenomenon that is useful as a quantity in describing a magnetic field. It is denoted by H. Simply, the magnetic intensity refers to the forces that the poles of a magnet experience in a magnetic field. Typically, it is the part of the magnetic field in a material that arises from an external current and is not intrinsic to the material itself.

The formula for the determination of magnetic intensity is I = M/V, where I is the intensity of magnetisation, M is Magnetic moment, and V is the volume. The SI unit for this parameter is A/m or amperes per meter.

What is the Intensity of Magnetisation?

The term intensity of magnetisation explains the extent to which a specimen is magnetized when it is placed in a magnetizing field. This refers to the magnetic pole moment developed per unit volume when a magnetic material is subjected to the magnetizing field. The unit of measurement for the intensity of magnetisation is ampere per meter.

Basically, the intensity of magnetisation describes the net magnetic moment that is acquired per unit volume of a specimen. It can be given as M = m_netV, where M is the intensity of magnetisation, V is the volume of the specimen, and m_net is the net magnetic moment.

The intensity of magnetisation is a vector quantity whose direction is similar to the direction of a magnetizing field. It shows the extent to which the material is magnetized. Moreover, it depends on the nature of the material and temperature.

What is the Difference Between Magnetic Intensity and Intensity of Magnetisation?

The key difference between magnetic intensity and intensity of magnetisation is that magnetic intensity refers to the forces that the poles of a magnet experience in a magnetic field, whereas the intensity of magnetisation refers to the change in the magnetic moment of a magnet per unit volume.

The formula for the determination of magnetic intensity is I = M/V, where I is the intensity of magnetisation, M is Magnetic moment, and V is the volume. The formula for the determination of intensity of magnetisation is M = m_netV, where M is the intensity of magnetisation, V is the volume of the specimen, and m_net is the net magnetic moment.

Below is a summary of the difference between magnetic intensity and intensity of magnetisation in tabular form for side by side comparison.

Summary – Magnetic Intensity vs Intensity of Magnetisation

Magnetic intensity and intensity of magnetisation are important terms regarding magnetic fields. The key difference between magnetic intensity and intensity of magnetisation is that magnetic intensity refers to the forces that the poles of a magnet experience in a magnetic field, whereas the intensity of magnetisation refers to the change in the magnetic moment of a magnet per unit volume.

Reference:

1. “Intensity of magnetisation – Magnetism and Matter Class 12.” ESaral, 17 Mar. 2020.

Image Courtesy:

1. “Magnetic Vector Potential Circular Toroid” By Constant314 – Own work (CC0) via Commons Wikimedia
2. “VFPt magnets BH charges+currents” By Geek3 – Own work This file was derived from:VFPt magnet B currents.svgVFPt magnet H charges.svg (CC BY-SA 4.0) via Commons Wikimedia