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EntityQ47083· pop 91· linked from 555 articles

ohm

Also known as Ω

unité dérivée SI de mesure de résistance électrique

AI overview

An ohm is the standard unit used to measure electrical resistance, which is the opposition that a material presents to the flow of electric current. It matters because it provides a common way to quantify and compare how much different materials and components resist electricity, making it essential for designing and understanding electrical systems.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Unit.symbol: Ω
Unit.name: ohm
Unit.image: 240px
Unit.caption: A laboratory one-ohm standard resistor,
Unit.standard: SI
Unit.quantity: electrical resistance
Unit.namedafter: Georg Ohm
Unit.units1: SI base units
Unit.inunits1: kg⋅m2⋅s−3⋅A−2

via Wikipedia infobox

Wikidata facts

Named after: Georg Simon Ohm
Image: 3 Resistors.jpg

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described by source: New International Encyclopedia
NCI Thesaurus ID: C42554
unit symbol: Ом
conversion to SI unit: 1
Wikidata SPARQL query equivalent: wd:Q47083 p:P2370/psn:P2370 [wikibase:quantityAmount ?source; wikibase:quantityUnit ?base]. ?item p:P2370/psn:P2370 [wikibase:quantityAmount ?target; wikibase:quantityUnit ?base]. BIND(?source / ?target as ?value)
on focus list of Wikimedia project: Wikipedia:Vital articles/Level/4
derived from base unit: ampere
Commons category: Ohm (unit)

Sources (2)

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Article · Français

L’ohm, de symbole Ω (la lettre capitale grecque oméga), est l'unité de résistance électrique du Système international (SI). Il a été nommé ainsi en l’honneur de Georg Ohm, physicien allemand à l'origine notamment de la loi d'Ohm. Pour caractériser les isolants électriques on utilise le kiloohm (ou kilo-ohm) et surtout le mégaohm, généralement renommés, par euphonie, kilohm et mégohm : 1 kΩ = 103 Ω, 1 MΩ = 106 Ω.

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