Magnetomotive Force Converter

Convert magnetomotive force between ampere-turns and gilberts, the units describing the driving force behind a magnetic field.

Magnetomotive Force Is the Magnetic Equivalent of Voltage

Magnetomotive force plays essentially the same role in magnetic circuits that voltage plays in electrical circuits, acting as the driving force that pushes magnetic flux through a magnetic circuit, and it’s calculated directly from the current flowing through a coil multiplied by the number of turns that coil is wound with, which is exactly why the standard unit, the ampere-turn, directly reflects this relationship rather than being an independently defined unit of its own. This is precisely why a coil’s magnetic driving force can be increased either by increasing the current flowing through it or by adding more turns of wire to the coil, two genuinely different physical approaches that both achieve the same underlying increase in ampere-turns, a design flexibility electromagnet, transformer, and motor engineers exploit constantly depending on which approach, higher current or more winding turns, better suits a specific design’s other constraints, such as available space for windings versus available power supply current capacity. The gilbert, an older centimetre-gram-second unit still occasionally encountered in legacy technical literature, measures the same underlying magnetomotive force concept using a slightly different scaling constant than the more universally adopted ampere-turn.