MMF Full Form

What is Full Form of MMF ?

MMF is the abbreviation used for Magnetomotive force. This is a part of the equation of magnetic flux in magnetic circuits. This component is analogous to electromotive force. The only difference in the working of magnetomotive force is that MMF “drives” magnetic flux through the magnetic circuit. MMF can be used anywhere where magnetic circuit technology is used to design and in functioning different types of equipment. The main principle behind this is that, similar to the current flowing through an electric circuit is due to electromotive force, identical to magnetomotive force, which is the one that drives magnetic flux in the magnetic circuit.

History

The term magnetomotive force was coined by Henry Augustus Rowland in the year 1880. This was used to be directly related to electromotive force. Though the magnetic analogy was brought by Michael Faraday and James Clerk Maxwell. It was Rowland who coined the term following the Ohms law for magnetic circuits in 1873. This ohms law for magnetic circuits is sometimes also known as Hopkins law.

Features

The term MMF was developed to discuss the use of magnetic flux in magnetic circuits. This can also be mentioned as the magnetic pressure, which induces a magnetic flux in a magnetic circuit. The equation and features of MMF are measured in ampere-turn(AT) which is usually represented by a direct current of one ampere flowing in a single-turn loop in a vacuum. Researchers sometimes use the term Gibert (G) to represent Magenetototive Force. And One gilbert is equal to (10/4π)≈0.78 ampere-turn. The strength of the Magnetomotive force is equivalent to the product of the current around the turns and the number of turns of the coil.