What levels of voltage are lethal?

This is a very common question, but the answer is not as clear as many people would hope. The amount of voltage it will take to kill a person will vary greatly based on many different factors. For example, it takes very little electricity to kill someone if it is applied directly to the heart. In addition, it will take a lower number of volts to kill someone if it is a constant current that is entering the body than if it were just one quick shock. Of course, it will also depend on the health of the person being shocked. Someone who is young and healthy will generally be able to survive an incident involving more voltage than someone who is already having heart problems or is otherwise unhealthy.