Am I understanding this correctly? If a person is touching the hot wire in their house (AC) and they are grounded ... this completes the circuit. In AC electrons move back and forth a few centimeters, 60 times each second (60Hz). Therefore, if electocution happens, it is a lot of charge moving back and forth in the persons body that can harm them ..... not a lot of charge traveling from the wall socket through a person and into the ground right? The ground just provides the possibility for the charge to move back and forth?