electric shock refers to current passing over or through a human body or its members and to the injuries that result. For electric shock to occur, a person must become part of an electric circuit ; that is, a person must become a conductor between two points that differ in electrical potential
electric shock effects are mainly a function of the amount of current that flows through the body.Besides current, other properties of electricity that affect the severity of shock include voltage, type of current and frequency of alternating current. Length of exposure and the part of the body through which the current passes are also important determiners of the probability and severity of injury. The effects are summarized in Table 12-2 Figure 12-1 presents effects from electricity of various forms. In general, alternating current is more dangerous than direct current and 60 Hz is more dangerous that high-frequency current