What is magnetomotive force (magnetic potential)? - Definition from WhatIs.com

Definition

magnetomotive force (magnetic potential)

Part of the Electronics glossary:

Magnetomotive force, also known as magnetic potential, is the property of certain substances or phenomena that gives rise to magnetic field s. Magnetomotive force is analogous to electromotive force or voltage in electricity.

The standard unit of magnetomotive force is the ampere-turn (AT), represented by a steady, direct electrical current of one ampere (1 A) flowing in a single-turn loop of electrically conducting material in a vacuum . Sometimes a unit called the gilbert (G) is used to quantify magnetomotive force. The gilbert is defined differently, and is a slightly smaller unit than the ampere-turn. To convert from ampere-turns to gilberts, multiply by 1.25664. Conversely, multiply by 0.795773.

Although the standard definition of magnetomotive force involves current passing through an electrical conductor, permanent magnet s also exhibit magnetomotive force. The same is true for planets with magnetic fields, such as the Earth, Jupiter, Saturn, Uranus, and Neptune. The Sun also generates magnetomotive forces, particularly in the vicinity of sunspots.

Also see ampere-turn , gilbert , magnetic field , electromotive force , International System of Units ( SI ), and Table of Physical Units .

This was last updated in March 2011
Posted by: Margaret Rouse

Related Terms

Definitions

  • Planck's constant

    - Planck's constant, symbolized h, relates the energy in one quantum (photon) of electromagnetic radiation to the frequency of that radiation. (WhatIs.com)

  • aluminum battery

    - Aluminum batteries run longer on a charge than lithium ion batteries and are safer in use. Stanford researchers have created an aluminum-graphite battery for mobile devices, the electric grid and f... (WhatIs.com)

  • optoisolator (optical coupler or optocoupler)

    - An optoisolator (also optical coupler or optocoupler) is a component that uses light to transfer electrical signals between circuits to keep them electrically isolated from each other, preventing s... (SearchNetworking.com)

Glossaries

  • Electronics

    - Terms related to electronics, including definitions about electrical components and words and phrases about computers, laptops parts, digital cameras, televisions and home appliances.

  • Internet applications

    - This WhatIs.com glossary contains terms related to Internet applications, including definitions about Software as a Service (SaaS) delivery models and words and phrases about web sites, e-commerce ...

Ask a Question About magnetomotive force (magnetic potential)Powered by ITKnowledgeExchange.com

Get answers from your peers on your most technical challenges

Tech TalkComment

Share
Comments

    Results

    Contribute to the conversation

    All fields are required. Comments will appear at the bottom of the article.