What is a volt in physics?

In the field of physics, the Volt (often denoted by the symbol ‘V’) can be defined as the unit of electric potential difference (commonly referred to as voltage), electromotive force (commonly abbreviated to EMF), and electric potential. As per the International System of Units (often abbreviated to SI), one volt is equal to the difference in the electric potentials between two given points in a wire conducting an electric current of magnitude 1 ampere and dissipating one watt of power between those two points. Alternately, it can be defined as the potential difference that arises between two points in which one Joule of energy is imparted to each Coulomb of charge that passes through it. The SI unit of electromotive force and electric potential difference is named after the Italian chemist and physicist Alessandro Volta. The SI base units of this derived unit are kilogram.meter2.second-3.ampere-1 (or kg.m2.s-3.A-1).

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