During a weather storm, an atmospheric discharge hits a lightning pole. The pole is grounded through a hemisphere. The maximum value of the lightning current through the pole is 10 kA. The soil of the area is moist. A man who is walking 20m away from the center of the hemisphere experiences an excessive step potential. The man's body resistance is 1500Ω. Assume that the step of the person is about 0.6m. Compute the current through his legs and his step potential.