After an alternating current passes through the human body, how many milliamperes are considered quite dangerous and may lead to death?

When discussing the effects of electric current passing through the human body, it's important to understand how different levels of current can impact health and safety. An alternating current of 41-90 milliamperes is considered particularly dangerous because it can disrupt the normal functioning of the heart and lead to severe health consequences, including ventricular fibrillation. This is a condition where the heart's electrical activity becomes disordered, preventing it from effectively pumping blood, which can ultimately result in death if immediate medical intervention is not provided.

This range of current can also cause muscle contractions, making it difficult for a person to free themselves from the source of the electricity. The threshold for such dangerous effects is crucial for safety protocols regarding electricity and equipment that may pose electrical hazards. Understanding these critical thresholds helps in ensuring proper precautions are taken when operating electrical machinery or dealing with electrical systems.