What are the three primary factors that affect the severity of an electrical shock?

The three primary factors that affect the severity of an electrical shock are current, path of current, and duration of contact.

Current is critical because it is the flow of electricity that can cause harm to the human body. A higher current typically results in a greater risk of injury. The path that the current takes through the body also greatly influences the severity of an electrical shock; for instance, current passing through vital organs can be much more dangerous than current flowing through a finger. Lastly, the duration of contact is important as a longer exposure to electrical current increases the potential for serious injury or fatality.

Understanding these factors is essential for electricians to take appropriate safety precautions and mitigate risks when working with electrical systems.