The drawing shows the currents and magnetic field at a point in the AC cycle when the current is increasing. The time varying magnetic field from the lefthand wire passes through the righthand wire, creating circular eddy currents (E) in the wire. During the part of the AC cycle when the current is increasing the eddy currents circle in a clockwise direction as shown, increasing the current density on the right side of the wire (2) and decreasing the density on the left side (1). The resulting current density profile is shown by the red arrows, and color gradient on the cross section of the wire (3), with blue indicating lower current density, and green, yellow, and red progressively greater current density. During the other half of the cycle while the current is decreasing, the eddy currents are in a counterclockwise direction, reversing the current.