volt

Also known as V

The volt (symbol: V), named after Alessandro Volta, is the unit of measurement of electric potential, electric potential difference (voltage), and electromotive force in the International System of Units (SI).

AI overview

A volt is the standard unit used to measure electrical pressure or force—the push that makes electricity flow through wires and devices. Understanding volts matters because it tells you how much electrical power a device uses and whether it's safe to use with a particular power source, like a battery or wall outlet.

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

Key facts

Unit.name: volt
Unit.image: 240px
Unit.caption: Josephson voltage standard chip developed by the National Bureau of Standards as a standard volt
Unit.standard: SI
Unit.quantity: electric potential, electromotive force
Unit.symbol: V
Unit.dimension: M⋅L2⋅T−3⋅I
Unit.namedafter: Alessandro Volta
Unit.extralabel: SI base units
Unit.extradata: kg⋅m2⋅s−3⋅A−1

via Wikipedia infobox

Wikidata facts

Show 5 more facts

conversion to SI unit: 1
unit symbol: V
Wikidata SPARQL query equivalent: wd:Q25250 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)
Commons category: Volt
NCI Thesaurus ID: C42551

Sources (2)

via Wikidata · CC0

~8 min read

Article

8 sections

Contents

Definition
Josephson junction definition
Water-flow analogy
Common voltages <span class="anchor" id="Common values"></span>
History
See also
References
External links

== Definition == One volt is defined as the electric potential between two points of a conducting wire when an electric current of one ampere dissipates one watt of power between those points. It can be expressed in terms of SI base units (m, kg, s, and A) as