# Ohm

There are some materials which offer some resistance to the current flow; they are not good Electrical conductors or good Electrical insulators. They are resistive materials, for example graphite, iron, and certain synthetic materials.

The magnitude that represents this characteristic is the resistance, and it is measured in ohms. An ohm (referred to by the Greek letter Ω (Omega)) is the SI unit of resistance (R). It can be defined by Ohm's law and the equation:

${\displaystyle R=V/I}$

where ${\textstyle R}$ is resistance in ohms, ${\textstyle V}$ is voltage in volts, and ${\textstyle I}$ the current in amperes.

The ohm was named after Georg Ohm.

Other Languages
Afrikaans: Ohm
العربية: أوم
অসমীয়া: ওম
asturianu: Ohmiu
azərbaycanca: Om (ölçü vahidi)
বাংলা: ওহম
беларуская (тарашкевіца)‎: Ом
български: Ом (физика)
བོད་ཡིག: ཨོ་མུ།
bosanski: Om
brezhoneg: Ohm
català: Ohm
čeština: Ohm
Cymraeg: Ohm
dansk: Ohm
Deutsch: Ohm
eesti: Oom
English: Ohm
español: Ohmio
Esperanto: Omo
euskara: Ohm
فارسی: اهم
français: Ohm (unité)
Gaeilge: Óm
Gaelg: Ohm
galego: Ohm

한국어: 옴 (단위)
hrvatski: Om
Bahasa Indonesia: Ohm
íslenska: Ohm
italiano: Ohm
עברית: אוהם
ქართული: ომი (ფიზიკა)
қазақша: Ом
latviešu: Oms
lietuvių: Omas
Limburgs: Ohm (einheid)
македонски: Ом
मराठी: ओह्म
Bahasa Melayu: Ohm
монгол: Ом
မြန်မာဘာသာ: အုမ်း
Nederlands: Ohm (eenheid)

Nordfriisk: Ohm (ianhaid)
norsk: Ohm
norsk nynorsk: Ohm
occitan: Ohm
oʻzbekcha/ўзбекча: Om
ਪੰਜਾਬੀ: ਓਹਮ
پنجابی: اوہم
Patois: Uom
Piemontèis: Ohm
Plattdüütsch: Ohm (Eenheit)
português: Ohm
română: Ohm
русский: Ом
Scots: Ohm
sicilianu: Ohm
සිංහල: ඕම්
slovenčina: Ohm (jednotka)
slovenščina: Om
српски / srpski: Ом (јединица)
srpskohrvatski / српскохрватски: Om (jedinica)
suomi: Ohmi
svenska: Ohm
ไทย: โอห์ม
Türkçe: Ohm
українська: Ом
اردو: اوھم
Tiếng Việt: Ohm
Winaray: Ohm