Electric wires are dangerous for humans, but birds sit on them safely. Why does this happen?
We often see birds calmly resting on electric wires, even though those same wires carry high voltage.
For humans, touching an electric wire usually means a serious electric shock or even death.
This looks puzzling because birds are in contact with the same wires that can harm us.
Birds touch only one wire at a time, so there is no voltage difference across their bodies.
Electric current flows only when there is a complete circuit or path for it to move.
Since birds touch only one wire and not the ground or another wire, no current flows through them.
