eli5 Why is touching a live wire dangerous? Doesn’t electricity take the path of least resistance? Wouldn’t your hand be a much worse conductor than a copper wire?

555 viewsEngineeringOther

eli5 Why is touching a live wire dangerous? Doesn’t electricity take the path of least resistance? Wouldn’t your hand be a much worse conductor than a copper wire?

In: Engineering

10 Answers

Anonymous 0 Comments

Two misconceptions here: Electricity takes all paths in proportion to how well they conduct electricity, and the hot wire doesn’t normally drop in voltage much when loads are added. It does drop a little because the wires aren’t superconductors, but anything drawing enough current to drop it a lot will trip the breaker from overcurrent.

The resistance of your body also isn’t a single fixed value, the resistance of your skin especially changes drastically with how wet it is, and high voltages will break the skin down and decrease the resistance further.

You are viewing 1 out of 10 answers, click here to view all answers.