An important electrical phenomenon, in which a charged conductor causes unlike electricity to appear in an insulated conductor on the end near it, and like electricity on the other end. In the same way a magnet induces the opposite magnetic charge in iron, and an electric current induces a momentary current in the opposite direction in a neighboring wire. In practics, the induced current is often used instead of the primary current. In long telegraph wires and ocean cables induction acts to check the rapidity of movement of the current.