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In other conductive materials, the electric current is due to the flow of both positively and negatively charged particles at the same time. In still others, the current is entirely due to positive charge flow. For example, the electric currents in electrolytes are flows of positively and negatively charged ions.
1 The most common manifestation of charge in motion is the movement of electrons in a wire such as the wire leading to the computer that is running this lesson. 2  That's one form of current. 3  Here's a simulation that lets you see how charge flows around an electrical circuit through several elements. Like water flowing in a pipe, current flows in a wire. 2  Just as the water in the pipe is confined to the pipe, the charge flowing in a wire is confined to the wire. 3  It can't get away, and stays within the wire surface. 4  Like water flowing in a pipe, charge has to go somewhere.