Which factor does NOT determine the severity of an electric shock?

The severity of an electric shock is influenced by several key factors, including the amount of current flowing through the body, the current's frequency, and the current's path through the body.

The amount of current is significant because higher amperage can lead to greater physiological effects, including potential injury or fatality. The frequency of the current also plays a critical role; for example, alternating current (AC) at certain frequencies can cause more severe muscle contractions and interference with heart rhythms than direct current (DC).

Moreover, the current's path through the body is crucial, as different paths can affect vital organs. If the current traverses the heart or brain, it increases the risk of serious injury.

In contrast, the length of the body part in contact does not directly influence the shock's severity. While the area of contact can affect resistance and therefore the current passing through, it is not as critical a factor as the others listed. The body can have varying lengths of contact, but this does not fundamentally alter the dangers associated with an electric shock in the same way that current flow, frequency, and path do.