What is Magnetic Field?
Magnetic field or magnetism field is defined as the space or region around a magnet in which magnetic force is applied to another metallic material.
The magnetic field or magnetism can be represented in a variety of ways. It may be represented mathematically as a vector field that can be displayed as various sets on a grid. Another method is to utilize field lines. Magnetic field lines never cross one other. The denser the magnetism field lines the more strength of the magnetic field they represent. The magnetic field of the bar magnet is shown in the image added below,
Unit of Magnetic Field
Magnetic field is measured by determining the intensity and direction of the magnetic field. The measurement is required because each magnetic field differs from the others. In a magnetic field, we measure two things that are,
- Magnetic Field Strength(H) is measured in Ampere/meter.
- Magnetic Flux Density(B) measured in Tesla.
Magnetic Field Lines
Magnetic field lines are a type of visual representation of magnetic fields. They describe the magnetic force direction and magnetic force strength at any particular point near the magnet.
The magnitude of the field is indicated by the density of the lines. For example, at the poles of a magnet, the magnetic field is stronger and denser. It becomes weaker as we go away from the poles, and the lines become less dense.
Magnetic Field Line Properties
There are various properties of the magnetic field lines and some of them are,
- Magnetic field lines never cross one other.
- Magnetic field lines are always closed loops.
- The density of the field lines reflects the field’s intensity.
- Magnetic field lines always arise from or begin at the north pole and end at the south pole.
Magnetism
Magnetism in Physics is defined as the property of the material that is responsible for the magnetic behaviour of the magnets. Magnetism is defined as the force that is produced by the moving charge and it attracts or repels other magnets and moving charge. Initially, magnetism is defined as the property of some material to attract or repel some other magnets. Later it was discovered that all the moving charges are considered to be magnets and their property of attraction or repulsion is called magnetism.
Here, in this article, we will learn about, Magnetism Definition, History of Magnets, Causes of Magnetism, Magnetic Materials, Properties of Magnets and others in detail.
Table of Content
- What is Magnetism?
- What is Magnetic Field?
- Magnetic Materials
- Magnetism Types
- Magnetic Force
- Magnetic Effect Of Current