Would you ever touch a live electrical wire, of course not because it is likely to kill you so how come birds can sit unruffled on high-voltage power lines, what magical ability do they have to withstand such contact, Because they wear shockproof shoes? No!!.
To understand that we must first understand electrical current, electrical current is the movement of electrons these electrons travel from the power station to your house they move through the power lines through your electronic devices and eventually return to the mains. This process takes place in a closed loop this closed loop is necessary in order for electricity to flow in order to move electrons also require a difference in electrical potential simply put electrons move from a higher electrical potential to a lower one. Imagine a bunch of balls on top of the hill if they are not blocked they will roll down any path that becomes available this is similar to how electrons move from one electrical potential to another. It always takes the easiest route. That is, electricity always flows through a path of least resistance.
But when a bird sits on a wire both of its feet are at the same electrical potential so the electrons, therefore, have no reason to flow through the bird’s body. In easy words: Now, power cables through which electricity flows are made of copper. Copper offers the least resistance. And is a very good conductor of electricity. However, the bird’s body offers greater resistance. And is not a good conductor as copper. Hence, electricity ignores the bird and flows through the cables. And birds do not get electrocuted. Besides this, electricity flows from its highest potential to its lowest. Now, the power cables usually run at different potentials.
What if the bird touches two different cables simultaneously
Electricity flows from its highest potential to its lowest. Now, the power cables usually run at different potentials. If bird’s feet are on the same power cable, then they are at the same potential. Thus, the bird does not get electrocuted. However, when the bird touches, two cables with different potentials at the same time. Then electricity flows through the bird to go to another cable with lower potential. And the bird will get electrocuted. For more exciting stuff please subscribe to our Facebook Page
But why it’s dangerous for humans to touch a live wire
It is dangerous for humans to touch live wires since we are almost always in contact with the ground our bodies serve as a conductor for current to move from an area of high potential like a wire to an area of lower potential, the floor. Our bodies make excellent electrical conductors and the result is that we get sound this is why workers repairing live electrical wires use insulating materials such as rubber in their clothing and equipment even their bucket trucks are properly insulated these insulating materials do not conduct electricity so the electrons are blocked from flowing workers who repair power lines also sometimes work while hanging from a helicopter ensuring they are not touching the ground they still need to make sure they only touch one wire at a time though this is why the job of electrical repair remains one of the most dangerous around which leads to our conclusion it may be safe for birds to sit on electrical wires but humans should stay far away.