Named after a French physicist, what is the SI unit of electrical charge?
Electric charge charged particles, and how their interactions are mediated by photons, is called quantum electrodynamics. The SI derived unit of electric charge is the coulomb (C) named after French physicist Charles-Augustin de Coulomb. In electrical engineering, it is also common to use the ampere-hour (Ah); in physics and chemistry, it is common to use the elementary charge ("e" as a unit). Chemistry also uses the Faraday constant as the charge on a mole of electrons. The symbol "Q" often denotes charge. Charge is the fundamental property of forms of matter that exhibit electrostatic attraction or repulsion in the presence of other
Ampere Ampere The ampere (; symbol: A), often shortened to "amp", is the base unit of electric current in the International System of Units (SI). It is named after André-Marie Ampère (1775–1836), French mathematician and physicist, considered the father of electrodynamics. The International System of Units defines the ampere in terms of other base units by measuring the electromagnetic force between electrical conductors carrying electric current. The earlier CGS measurement system had two different definitions of current, one essentially the same as the SI's and the other using electric charge as the base unit, with the unit of charge defined by