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intensity of the electric current - The ratio between the amount of the electrical charge ∆Q flowing through a cross section of the conductor in a time interval ∆t, and the time interval itself, direction of the current - Conventionally defined as the direction of the movement of positive charges, conduction electrons - Free electrons in metal which carry electricity, direct current - A current that always flows in the same direction, with a constant intensity over time, drift velocity - The average velocity that an electron attains in a material due to an electric field, drift - The ordered movement of electrons in a conductor with a difference of potential at its ends, battery - A device that is capable of transforming chemical energy into electrical energy, Ampere (A) - The unit of the intensity of the electrical current, metal conductor - Material that allows current to flow easily,

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