In the second drawing, the alternating current in the wires is in opposite directions; in the lefthand wire it is into the page and in the righthand wire it is out of the page. This is the case in AC electrical power cables, which have two wires in which the current direction is always opposite. In this case, since the current is opposite, from the right hand rule the magnetic field (B) created by the lefthand wire is directed downward through the righthand wire, instead of upward as in the other drawing. From Faraday's law the circular eddy currents (E) are directed in a counterclockwise direction.