Magnetostatics, Magnetism and Electromagnetism
Magnetostatics is the study of magnetic fields in systems where the currents are steady. Electromagnetism is the branch of physics, which studies the forces that occur between electrically charged particles. These forces are explained in electromagnetic theory using electromagnetic fields. Electromagnetic interaction is responsible for practically all the phenomena encountered in daily life, with the exception of gravity.
An electromagnetic (EM) field is a physical field produced by moving electrically charged objects. It affects the behavior of charged objects in the vicinity of the field. The electromagnetic field can be viewed as a combination of an electric field and magnetic field.
An electric field is physical field surrounding electrically charged particles, conductors with electric currents and time-varying magnetic fields.
A magnetic field is a physical field surrounding conductors with electric currents, moving electrically charged particles, magnetic materials and time varying electric fields. The magnetic field at any given point is specified by both a direction and a magnitude (or strength); as such it is a vector field. There are two separate but closely related fields to which the name “magnetic field” can refer, denoted by the symbols B and H.
Magnetomotive force (MMF) is any physical driving or motive force that produces magnetic flux. Magnetomotive force is analogous to EMF (electromotive force) in electric circuits.
The SI unit of magnetomotive force is the ampere (A) (former ampere-turn), represented by a steady, direct electric current of one ampere flowing in a single-turn loop of electrically conducting material in a vacuum. The CGS unit of magnetomotive force is the gilbert (Gi). The gilbert is defined differently, and is a slightly smaller unit than the ampere. The ampere-turn (AT) was the MKS (meter–kilogram–second system) unit of magnetomotive force, represented by a direct current of one ampere flowing in a single-turn loop in a vacuum. “Turns” refers to the winding number of an electrical conductor comprising an inductor. For example, a current of 5A flowing through a coil of 20 turns produces an MMF of 100 AT.
Using the Magnetomotive Force Converter
This online unit converter allows quick and accurate conversion between many units of measure, from one system to another. The Unit Conversion page provides a solution for engineers, translators, and for anyone whose activities require working with quantities measured in different units.
You can use this online converter to convert between several hundred units (including metric, British and American) in 76 categories, or several thousand pairs including acceleration, area, electrical, energy, force, length, light, mass, mass flow, density, specific volume, power, pressure, stress, temperature, time, torque, velocity, viscosity, volume and capacity, volume flow, and more.
Note: Integers (numbers without a decimal period or exponent notation) are considered accurate up to 15 digits and the maximum number of digits after the decimal point is 10.
In this calculator, E notation is used to represent numbers that are too small or too large. E notation is an alternative format of the scientific notation a · 10x. For example: 1,103,000 = 1.103 · 106 = 1.103E+6. Here E (from exponent) represents “· 10^”, that is “times ten raised to the power of”. E-notation is commonly used in calculators and by scientists, mathematicians and engineers.
- Select the unit to convert from in the left box containing the list of units.
- Select the unit to convert to in the right box containing the list of units.
- Enter the value (for example “15”) into the left From box.
- The result will appear in the Result box and in the To box.
- Alternatively, you can enter the value into the right To box and read the result of conversion in the From and Result boxes.
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