also: ヴォルト
noun
volt
The standard unit of electrical potential difference. Used in technical, scientific, and everyday contexts when discussing electricity.
この電池は1.5ボルトです。
This battery is 1.5 volts.
日本の家庭用電圧は100ボルトです。
The household voltage in Japan is 100 volts.
Standard katakana spelling for the unit of electrical potential.
Less common variant spelling; ボルト is overwhelmingly preferred in modern Japanese.
Borrowed from English 'volt', named after the Italian physicist Alessandro Volta. The variant ヴォルト reflects an older or more precise transliteration of the 'v' sound, but ボルト is now standard.