At what current level is extreme pain and the possibility of death likely?

The current level associated with extreme pain and a significant risk of death is often cited around 50 mA. At this level, the electric shock can lead to severe physiological effects, including interference with the heart's normal rhythm, which may result in ventricular fibrillation—a condition where the heart cannot pump blood effectively.

Current flowing through the body at this level can cause muscle contractions that may make it difficult for an individual to free themselves from the source of shock, prolonging exposure and increasing the risk of serious injury or fatality. It’s important to note that even lower levels of current can be dangerous, particularly in certain conditions like wet environments or when the skin's resistance is reduced.

Understanding these thresholds is crucial for electrical safety practices and highlights the importance of proper safety measures when working with or encountering electrical systems.