Final answer:
The intensity of an electrical shock is primarily determined by the current that flows through the body, and is affected by factors such as the path of the current, duration and frequency of the shock as well as the body's resistance.
Step-by-step explanation:
The intensity of electrical shock is determined mainly by the amount of current (I) flowing through the body, the path the current takes, the duration of the shock, and the frequency (f) of the current. Current is the primary factor in shock severity because it is the actual flow of electrical charge that causes harm. The voltage can appear more dangerous, but it is the current resulting from the applied voltage and the resistance of the body (I = V/R) that will ultimately determine the severity of the shock. For example, dry skin has high resistance and will allow less current to pass compared to wet skin, which has much lower resistance and therefore poses a greater hazard when in contact with the same voltage.
Variables such as wearing insulating shoes can increase resistance and reduce the likelihood of current flow through the body. It's also important to note that electricity will take the path of least resistance to the ground, often through the body if possible, which can result in a severe shock if that path includes vital organs like the heart.