Why does a bird not get electrocuted when it steps on a power line

Birds that are on the same line and have no contact with other lines or the ground will not be electrocuted.

Ways to prevent electric shock:

1. Insulation: It is to prevent the human body from touching the insulating object and close the charged body. Porcelain, glass, mica, rubber, wood, bakelite, plastic, cloth, paper, and mineral oil are all commonly used insulating materials.

It should be noted that many insulating materials will lose their insulation properties after being damp or will be damaged under the action of strong electric fields, and lose their insulation properties.

2. Screen protection: that is, the use of shields, passports, cover box gates, etc. to isolate the charged body from the outside world.

The movable parts of electrical switches generally cannot be insulated, but need to be screened. High-voltage equipment, whether it is insulated or not, should be screened.

3. Spacing: It is to ensure the necessary safety distance. In addition to preventing contact or excessive proximity to the charged body, the spacing can also play a role in preventing fire, preventing mixing wires, and facilitating operation. In low-voltage work, the minimum service distance should not be less than meters.

Hello: The distance between the two legs of the bird is very small, resulting in a very small voltage between the two legs, at this time, the current will not flow in from one leg of the bird, and will flow out from the other leg, and the current will only flow through the wire (which can be seen as a short circuit), so the bird is safe and sound. Unless there is a bird with two long legs, as long as human legs, then it will also be electrocuted.

The explanation of this question is very interesting, and when you have studied Ohm's law of the whole circuit in high school physics (not the one in junior high school), you will understand it all. This has nothing to do with whether or not the ground wire is connected (but if the ground wire is connected, it can also be electrocuted, and the principle is similar, both of which are caused by the voltage difference to cause the current).

Because it's only on one wire, it doesn't form a circuit.

Why does a bird not get electrocuted when standing on a power line? Because the bird is relatively light, and the foot falls on the wire, it is equivalent to forming a closed circuit, and it will not be electrocuted.

Because no electric current flows through its body.

There are two conditions that must be met for the current to flow, one is that there is a voltage, and the other is that there must be a loop. The bird standing on the wire only has voltage, but there is no circuit, so it will not be electrocuted.

Electric shock is a common name for electrical injury, which usually refers to the tissue damage and dysfunction caused by the human body directly touching the power supply or high-voltage electricity passing through the human body through air or other conductive media to transmit the current through the human body, and in severe cases, cardiac and respiratory arrest occur. High voltages above 1000V can also cause burns. Lightning damage (lightning strike) falls under the category of high-voltage electrical damage.

There are many causes of electrical injuries, mainly lack of knowledge of safe electricity use, installation and maintenance of electrical appliances, wires not operating according to regulations, and hanging clothes on wires. High temperature, high humidity and sweating reduce the surface resistance and easily cause electrical damage. Electrical damage can be caused by electrical injuries caused by electrical wires broken and falling to the human body during an accident, taking shelter from a tree during a thunderstorm, or being struck by lightning with an umbrella with an iron handle.

The reason why the bird will not be electrocuted on the wire: because the bird is small, it only touches one wire (the bird's feet are on the same wire, and there is almost no potential difference between the two feet), 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.

Electric shock: It is caused by the direct contact of the human body with the power supply, and a certain amount of current passes through the human body, resulting in tissue damage, dysfunction and even death. The longer the electric shock, the more severe the electrical damage to the human body.

Lightning strikes in nature are also a form of electric shock, and their voltages can be as high as tens of millions of volts, causing extremely strong currents and extremely harmful electric shocks.

The wire is a good conductor of electricity, and the bird can be considered to be equal potential between its two feet, which is zero voltage, so the bird does not have voltage and will not be electrocuted.

Because no electricity flows through its body, the bird will not be electrocuted when standing on the wire.

There are two conditions that must be met for the current to flow, one is that there is a voltage, and the other is that there must be a loop (the loop is the path through which the current flows). The bird satisfies the first condition on the wire, but not the second. Because when both feet stand on the same line, the voltage on both feet is equal, and there is no loop, so there is no electric shock.

The generation of current requires a complete circuit, which includes the live wire, the neutral wire, and the conductor, and only when the bird touches the neutral wire and the live wire at the same time, the loop current will be formed, so that the bird will be electrocuted to death. Birds are small in size, standing on a wire, and the distance between their feet is also very small, resulting in a small difference in voltage that they are subjected to, and the sensation they produce is negligible.

The body structure of the bird

The structure of birds is classified from anatomy and physiology, involving the body temperature, skeletal organs, respiratory organs, physiological organs, nervous system, muscles, internal organs, reproduction and reproduction, and circulatory system of birds. Unlike mammals and reptiles, which also belong to the same subphylum of vertebrates, birds have their own unique physiological mechanisms, such as highly developed bones and respiratory organs that have evolved to adapt to flying birds.

Birds often peck at the oil secreted by the tail fat glands and coat their plumage all over their bodies to prevent water from coming into contact with ** to lower their body temperature. Birds do not have sweat glands, but the rapid exhalation of water vapor can take away a lot of body heat. Constant temperature also determines the lower limit of body weight, because if the volume becomes smaller, the heat dissipation area of the body surface will be relatively increased, which is not conducive to heat preservation.

When a bird is standing on a power line, if the voltage between the two feet is high enough, it will also electrocute, so they don't see a bird standing there on a power line above 500kv, and they know that it's a good thing.

Electric current flows through the wire, and since there is resistance in the wire, there is actually a voltage drop in every section of wire. And the bird is standing on the wire, and the voltage drop on the wire divided by the distance between the two legs is too small to cause a deadly current between the bird's legs, so the bird will not be electrocuted.

There is also the insulating nature of its foot straps.

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?

The reasons why the bird will not touch it when standing on the wire are:

Because no electric current flows through its body.

Two conditions must be met for the current to flow: one is that there is a base back voltage, and the other is that there must be a loop (the loop is the path of current flow). The bird satisfies the first condition on the wire, but not the second condition. So there will be no electric shock.

In fact, even if a person stands on a single wire, he will not be electrocuted. The reason is simple, the premise of electric shock is to have a conductive circuit. Take, for example, residential electricity. Residential electricity consumption is generally single-phase, with a live wire and a neutral line.

The live wire has a voltage of 220 volts to ground and the neutral line has a voltage of zero to the ground, so it can be considered that the neutral line is grounded. There must be a circuit when you are electrocuted, that is, you must touch the live wire, and at the same time touch the neutral line or the earth, to be electrocuted.

People are generally electrocuted by standing on the ground, the body is in contact with the fire wire, and the current flows from the wire through the human body to the earth, and then through the earth flow back to the grounding point of the power system, forming a loop.

The main reason is that the leaky pure bird only stands on one wire, and it will not be electrocuted if it is not clear on a wire, because it cannot form a loop on a wire, so it will not be electrocuted.