Current is a flow of electrical charge carriers, usually electrons or electron-deficient atoms. Electric current, any movement of electric charge carriers, such as subatomic charged particles (e.g., electrons having negative charge, protons having positive charge), ions ( atoms that have lost or gained one or more electrons), or holes (electron deficiencies that may be thought of as positive particles). Definition (Quantum Mechanics) In physics, a current may refer to a probability current, which is also called a probability flux. Electric current definition, the time rate of flow of electric charge, in the direction that a positive moving charge would take and having magnitude equal to the quantity of charge per unit time: measured in amperes. The common symbol for current is the uppercase letter I. One ampere of current represents one coulomb of electrical charge (6.24 x 10 18 charge carriers) moving past a specific point in one second. The standard unit is the ampere, symbolized by A. See more. This is a quantity that described the probability of flow in terms of unit time per unit area.
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