## Electric dipole moment |

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The **electric dipole moment** is a measure of the separation of positive and negative ^{[citation needed]}

Theoretically, an electric dipole is defined by the first-order term of the ^{[1]} However, because the charge separation is very small compared to

- elementary definition
- torque
- expression (general case)
- potential and field of an electric dipole
- dipole moment density and polarization density
- electric dipole moments of fundamental particles
- dipole moments of molecules
- see also
- references and in-line notes
- further reading
- external links

Often in physics the dimensions of a massive object can be ignored and can be treated as a pointlike object, i.e. a *q* and the other one with charge −*q* separated by a distance *d*, constitute an *electric dipole* (a simple case of an

and is directed from the negative charge to the positive one. Some authors may split *d* in half and use *s* = *d*/2 since this quantity is the distance between either charge and the center of the dipole, leading to a factor of two in the definition.

A stronger mathematical definition is to use

where **d** is the **p** also points from the negative charge to the positive charge.

An idealization of this two-charge system is the electrical point dipole consisting of two (infinite) charges only infinitesimally separated, but with a finite **p**.

This quantity is used in the definition of

Other Languages

العربية: عزم ثنائي قطب

беларуская: Электрычны дыпольны момант

català: Moment dipolar elèctric

čeština: Dipólový moment

Deutsch: Elektrisches Dipolmoment

eesti: Elektriline dipoolmoment

Ελληνικά: Ηλεκτρική διπολική ροπή

español: Momento dipolar químico

فارسی: گشتاور دوقطبی الکتریکی

français: Dipôle électrostatique

Gaeilge: Móimint leictreach dhépholach

galego: Momento do dipolo eléctrico

한국어: 전기 쌍극자 모멘트

հայերեն: Դիպոլային մոմենտ

हिन्दी: विद्युत द्विध्रुव आघूर्ण

മലയാളം: ഡൈപോൾ

मराठी: विद्युत द्विध्रुव जोर

Nederlands: Dipoolmoment

日本語: 電気双極子

polski: Elektryczny moment dipolowy

português: Momento do dipolo elétrico

română: Moment electric dipolar

русский: Электрический дипольный момент

slovenčina: Dipólový moment

slovenščina: Električni dipolni moment

српски / srpski: Диполни момент

Türkçe: Elektrik dipol momenti

українська: Електричний дипольний момент

Tiếng Việt: Mômen lưỡng cực điện

中文: 电偶极矩