2V

2V is an alphanumeric designation that can refer to several different concepts, depending on the context. In physics and electrical engineering, 2V most commonly denotes a potential difference of two volts, the SI unit for electric potential. A voltage of 2V might appear as a supply rail, a signal level, or a battery rating, and it is equal to two joules per coulomb. The symbol V stands for volt, and when paired with a number like 2, it specifies a two-volt quantity.

In automotive engineering, 2V is used as shorthand for a two-valve-per-cylinder configuration in internal combustion engines. This designation distinguishes such engines from other valve configurations, such as four-valve or multi-valve designs, and often reflects older or simpler cylinder-head architectures.

In other domains, 2V can appear as part of product names, model numbers, or codes where the meaning depends on the manufacturer. Because the term is not unique to a single field, encountering “2V” typically requires consulting the relevant context or documentation to determine the intended meaning.