Volt
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The volt, named after Alessandro Volta, is the unit of measurement of electric potential, electric potential difference, and electromotive force in the International System of Units.
Josephson voltage standard chip developed by the National Bureau of Standards as a standard volt
A multimeter can be used to measure the voltage between two positions.
1.5 V C-cell batteries
Alessandro Volta
Watt
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The watt is the unit of power or radiant flux in the International System of Units, equal to 1 joule per second or 1 kg⋅m2⋅s−3. It is used to quantify the rate of energy transfer. The watt is named in
Volt
…Units (SI). 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 Equivalently, it is the potential difference between…
A 420-watt power supply