Magnetic field

A magnetic field, a vector field in the vicinity of a magnet, an electric current, or a changing electric field are all examples of phenomena in which magnetic forces can be observed. In the presence of magnetic fields, such as those produced by the Earth, magnetic compass needles and other permanent magnets align themselves in the direction of the field. Moving electrically charged particles are compelled to follow a circular or helical route by magnetic fields. The operation of electric motors is governed by this force, which is exerted on electric currents in wires in a magnetized field. The majority of us are familiar with common magnetic objects and are aware that there can be forces acting between two magnetic objects. We understand that magnets have two poles and that the alignment of two magnets can result in either attraction (opposite poles) or repulsion (same poles) depending on their orientation (similar poles). We are aware that this occurs in a region extending surrounding a magnet, and we have identified this zone. This region can be described by the magnetic field.

Magnetic field 

The magnetic field is defined as the region of space close to a magnetic entity or a current-carrying body in which magnetic forces caused by the body or current can be sensed. Electric currents, which can be either macroscopic currents in wires or microscopic currents associated with electrons in atomic orbits, are responsible for the generation of magnetic fields. As described in the Lorentz force law, the magnetic field B is defined in terms of the force on the moving charge. Numerous practical uses are derived from the interaction of a magnetic field with charge. Magnetic field sources are primarily dipolar in nature, with a north and south magnetic pole on either side of the field.  

Unit of magnetic field 

The Tesla is the official SI unit for the magnetic field, as shown by the magnetic portion of the Lorentz force law 

Fmagnetic = qvB, 

which is composed of (Newton x second)/ (Coulomb x meter). The Gauss is a smaller magnetic field unit (1 Tesla = 10,000 Gauss).

Equation of magnetic field 

In this equation, the size of the force on a wire with current I and a length of L is shown. Angle between the wire and magnetic field: F = ILBsin where is the angle between the wire and magnetic field. When the force goes against the field and current, it’s on the other side.

Magnetic flux 

Faraday’s breakthrough came when he came up with a simple math equation to explain a series of electromagnetic induction tests he had done. Faraday is thought to be the best experimental scientist of the 19th century because he made a lot of progress in the field of science. It is important for us to understand the concept of magnetic flux before we can appreciate his work. The total number of magnetic lines of force in a field is referred to as the magnetic flux of the field.

There is a measurement called magnetic flux that tells you how much a magnetic field passes through a certain area. It is a good way to show how the magnetic force affects things that are in a certain area. In order to measure magnetic flux, you have to choose a particular area to calculate magnetic flux. Magnetic flux is usually denoted Φ or ΦB. The SI unit of magnetic flux is the weber, and the CGS unit is the maxwell.

Properties of magnetic flux 

• Each magnetic flux line is a closed loop with no open ends.
• Each magnetic flux line begins at the north pole of a magnet and travels through the field to the south pole, where it then returns to the north pole and continues through the body of the magnet to the north pole.
• There are no two flux lines that cross over each other.
• Two parallel lines of force go side by side, but they cancel out each other’s effects.
• Like an elastic cord, the lines of force are stretched out.

Conclusion 

The magnetic field is the region of space close to a magnetic entity or a current-carrying body in which magnetic forces can be sensed. In the presence of magnetic fields, such as those produced by the Earth, magnetic compass needles and other permanent magnets align themselves in the direction of the magnetic field. The operation of electric motors is governed by this force, which is exerted on electric currents in wires in a magnetized field. The Tesla is the official SI unit for the magnetic field, which is composed of (Newton x second)/ (Coulomb x meter). The Gauss is a smaller magnetic field unit (1 Tesla = 10,000 Gauss). Magnetic flux is a measurement of how much a magnetic field passes through a certain area.