The Coulomb (symbol: C) is the International System
of Units (SI) unit of electric charge. It is defined as the amount of electric
charge carried by one mole of electrons, which is approximately 6.241 × 10^18
electrons.
In practical terms, a
Coulomb is the amount of electric charge that passes through a point in an
electrical circuit when a current of one ampere flows for one second. It can be
expressed in terms of elementary charges (the charge carried by a single proton
or electron), with one Coulomb equal to approximately 6.242 × 10^18 elementary
charges.
The Coulomb is named after
the French physicist Charles-Augustin de Coulomb, who made important contributions
to the understanding of electrical charges and forces in the 18th century. The
Coulomb is used in a wide range of fields, including electronics,
electromagnetism, electrochemistry, and physics. It is a fundamental unit of
measurement in the study of electric charge and electric current
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