The volt (symbol: V) is the SI derived unit of electric potential difference or electromotive force. It is named in honor of the Lombard physicist Alessandro Volta (1745–1827), who invented the voltaic pile, the first modern chemical battery. Definition The volt is defined as the potential difference across a conductor when a current of one ampere dissipates one watt of power. Hence, it's the base SI representation m2 · kg · s-3 · A-1, which can be equally represent… (More on Volt)