Why can t the bird be electrocuted when standing on a high voltage power line?

The bird standing on the high-voltage line is standing on the same wire, the resistance of the wire is not as great as the resistance between the two legs of the bird, the wire will short-circuit the bird, there will be no voltage between the two feet of the bird, and there will be no current passing through it, so the bird will not be electrocuted.

However, if a bird's body touches two wires at the same time, or if a bird standing on a wire grinds its beak on an uninsulated pole or rack, an electric current will flow through the bird and electrocut. Because of this, there is always a long insulated porcelain bottle between the iron frame and the wire that people fix the wires on the poles of high-voltage transmission lines, which can not only protect birds from electric shock, but also avoid power outages due to electric shocks of birds. However, if the bird's feet span a long distance, the wire is also resistant, and the longer the conductor in the case of temperature, cross-sectional area, and material, the longer the length and the greater the resistance!

When the resistance of this long length of wire is greater than the resistance between the legs of the bird, an electric current will pass through the bird! But no bird can cross that great distance!

Because there is no circuit, no current is formed, and no work can be generated. You can also stand on a high-voltage line!

It is a very dangerous thing for people to touch the high-voltage line, so parents and teachers will educate us to stay away from this danger from an early age, but if you look closely, you will find that the bird not only dares to approach the high-voltage line, but also dares to stand on it and sing loudly! Why are we in danger and the birds are fine?

1. Birds are not electrocuted on high-voltage lines for two reasons:

1) scales grow on the feet of small birds, which have an insulating effect.

2) The bird is standing on a line, there is no loop, there is no continuous current, so the bird will not be electrocuted when it stops on the high-voltage line.

2. Analysis of electric shock mode of high-voltage line:

There are two ways of high-voltage electric shock: high-voltage arc electric shock and step voltage electric shock.

1) High-voltage arc electric shock refers to the electric shock caused by arc discharge caused by a person approaching a high-voltage line (high-voltage charged body). The higher the voltage, the greater the danger to people. The so-called arc discharge refers to:

Due to the high voltage, even if the high-voltage transmission line is not touched, people will see a flash of light (that is, arc light) in the process of approaching, and be knocked down by the high voltage, electrocuted, injured or killed, that is, arc discharge.

2) If a person or livestock stands within 8 10 meters from the landing point of the wire. An electric shock accident may occur, and this electric shock is called a step voltage electric shock. When a person is subjected to a stepping voltage, although the current is along the lower body of the person, from the feet through the legs, crotch and then to the feet and the earth to form a pathway, it does not pass through the vital organs of the human body, it seems to be relatively safe.

But that's not the case! Because when a person is subjected to a higher stride voltage, his feet will cramp and his body will fall to the ground. This not only increases the amount of electrical current acting on the body, but also changes the path of the current through the body, making it entirely possible for it to flow through vital organs such as head to hands or feet.

Experience has proved that after a person falls to the ground, the electric current continues to act in the body for 2 seconds, and this electric shock will be fatal.

3. First aid measures:

When a person perceives a threat from a stepping voltage, he or she should quickly put his feet together or jump out of the danger zone on one or both legs as soon as possible.

The bird can stand safely on the high-voltage line because the bird's two feet are on the same wire, and there is no voltage difference between the same wire. Therefore, no current can be generated. Electric shock must meet two conditions, one is voltage, and the other is that there is a current loop. <

1. The bird can stand safely on the high-voltage line because the bird's two feet are on the same wire, and there is no voltage difference on the same wire. Therefore, no current can be generated. Electric shock must meet two conditions, one is voltage, and the other is that there is a current loop.

2. First of all, living organisms are conductors, so a large enough electric current passing through the body will electrocute the organism. The essence of electrocution injury in living organisms is the thermal injury caused by heat generation when an electric current flows through an organism. The higher the current, the higher the heat and the greater the damage, and the extremely small current will not cause harm to the organism.

The magnitude of the current flowing through the organism is determined by the voltage difference. The greater the voltage difference, the greater the current.

We find signs of high voltage danger near the voltage line, but we often see birds standing on the high voltage line and nothing is going on.

The reason why the bird often stands on a wire with a high voltage and can not be charged is because the bird stands on a wire and cannot form a circuit, so it will not be electrified. The contact area between the bird and the wire is small, both feet are on the same line, the circuit is energized into positive and negative poles, and the current flows from the positive electrode to the negative electrode, and it is impossible for only one wire to form a circuit, so the bird will not be powered at all.

People will die of electrocution mainly because the human body is a conductor, and the human hand touches the fire wire of the high-voltage line, and the foot steps on the ground, which is equivalent to the zero line. And it is connected by a high-voltage line, which is far beyond the range of the human body, so it is inevitable to be shocked. Look at the signs under the high-voltage lines and follow the rules.

The contact range between the two feet of the bird and the wire can be said to be very small, and it is normal that it will not be electrocuted. Birds can rest on the wires and comb their feathers, but humans don't have this special condition. When we come into contact with the high extension line, we must be in contact with the earth, and it is inevitable that there will be an electric current passing through the body.

But there is no electric current on the birds, and they are safe to drop.

Electric shocks are really scary, and within a few minutes, the lives of those who have been electrocuted are in serious danger. When you find someone electrocuted, don't pull them directly with your hands. If you pull it by hand, it will only make one more person electrocuted, and it will not help anything.

You can find something that is not a conductor and let the person who has been electrocuted pull it to rescue you by this method. Time is precious, and after saving people, you must go to the hospital in time to check if there is any danger. Physical safety always comes first.

Usually at home, you should also check whether the electrical appliances at home are leaking, whether the circuit is aging, and whether the voltage can withstand it. There is a dangerous power supply, be sure to keep it away from children and the elderly.

Nature is so wonderful that the bird can stand on the wire because his legs are insulated, so that they will not find the threat of electricity.

I think it's because the bird is always standing on a high-voltage line, but its body structure is very small, and its claws are very small, so it won't be electrocuted.

The bird is standing on a line, so the high-voltage electricity will not have any electrical circuits in the bird's body, so the bird will not be electrified.

Because when the birds stand on the high voltage, their feet are very spaced apart, so it is like a broken circuit, so the circuit on their body is not working.

Because the bird will generally stand on a line, the electricity will generally pass directly through the body, and will not stay in the body, and the bird's body is too small.

The distance between the bird's feet is very small, and its stride voltage is almost negligible, so the current flowing through the bird is weak, so the bird will not be electrified.

Birds stop their feet on a wire, and their bodies only touch one wire, and there is no current loop, so no electricity flows through them.

Because the bird has little conductivity, it is not dangerous to be on the high-voltage line, and the current will not electrocute the bird, but people are different.

The wires that the birds usually stand on are wires that do not have high voltage, and they also stand selectively on high voltage lines, so they will not be electrified.

Because the bird stands on a wire, there is no closed loop, and no current passes through the bird.

Because the claws of the birds are small, and the contact area with the wires is also small, the current passing through the body is almost invisible, so some of these currents are safe for them.

When we walk on the road, we can often see groups of du

The sparrows or crows stop within tens of thousands of volts of high-voltage power lines.

Not only do they not tolerate electric shocks, but they also appear to be laid-back. However, you also know that if someone accidentally touches a high-voltage line, they will be electrocuted!

It's also a high-voltage wire, so why doesn't the bird get electrocuted when standing on it?

We all know that electricity is divided into positive and negative poles. When a conductor is connected between the positive and negative poles, an electric current flows through the conductor. Similarly, wires are also divided into positive and negative wires.

The human body is a conductor, the human body is larger, when it touches the wire, the two wires are connected together, forming a short circuit, and there is a large current flowing through the human body, which is the reason for the electrocution. Since the bird is smaller, it only touches one wire, its body and the wire it is standing on are equipotential, and there is no electric current passing through the body, so they will not be electrocuted.

However, if the snake climbs on the power line, it is dangerous, its body is long, and when it climbs on the high voltage line, it will connect the positive and negative two together, causing electrocution. Rats that burrow into power distribution rooms are also often electrocuted to death.

We also know that the live operation of electrical workers on high-voltage lines is the same as that of a bird standing on a wire, so it can be operated safely.

Birds such as magpies and crows like to nest on power poles, which is also very dangerous, which can easily form short circuits and cause disasters.

Why can't a bird be electrocuted when standing on a high-voltage line?

We find signs of high voltage danger near the voltage line, but we often see birds standing on the high voltage line and nothing is going on.

Because the bird's feet are straddled on a wire, the bird's resistance is much greater than the resistance of the wire between its legs, so the current passing through the bird's body is small, and it will not be electrocuted.