Everything about The Volt totally explained
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 represented as one
joule of
energy per
coulomb of charge, J/C.
» times greater than the RMS voltage for a
sinusoidal signal centered around zero voltage.
History of the volt
In 1800, as the result of a professional disagreement over the galvanic response advocated by
Luigi Galvani, Alessandro Volta developed the so-called
Voltaic pile, a forerunner of the
battery, which produced a steady electric
current. Volta had determined that the most effective pair of dissimilar metals to produce electricity was
zinc and
silver. In the 1880s, the International Electrical Congress, now the
International Electrotechnical Commission (IEC), approved the volt for electromotive force. At that time, the volt was defined as the potential difference across a conductor when a current of one
ampere dissipates one
watt of power.
Prior to the development of the Josephson junction voltage standard, the volt was maintained in national laboratories using specially constructed batteries called
standard cells. The United States used a design called the
Weston cell from 1905 to 1972.
Further Information
Get more info on 'Volt'.
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