Does current hurt or voltage hurt? Voltage hurts people or current hurts people

Electric current can hurt people. Because the human body is a conductor, its resistance is about 2000 euros, according to the electrical power is equal to the square of the current multiplied by the resistance, if the current continues to rise, its total power will increase rapidly at a square rate, for example, when the current is milliampere and 30 milliampere, its total power changes by 3600 times, not 60 times, so that if the current continues to rise, it will always reach the limit of the human body.

Electric currents hurt. We have to understand the concept that people are conductors, and electric current will pass through our body. Why do we feel numb at the moment of electric shock? Because it's the current that passes through your body, directing to the earth or some other conductor, that you feel numb.

The voltage represents the ability to do work, and you can think of the two ends of the voltage as the top and foot of a mountain, the higher the voltage, the higher the mountain, and the greater the force of the stone falling from the mountain. The current represents the result of the work done, only when the current is generated in the circuit, it means that the energy transfer has occurred, and the stone on the mountain really falls, as long as the current is not generated, even if the voltage is very high, it is still safe.

The damage caused by low voltage and high current to the human body will not be great, because this situation is not established at all, and it is impossible to produce high current after the low voltage below 36V is connected to the human body in dry conditions, because the human body itself is a resistor. There is also a formula for the work done by electricity w=uit, voltage and current are also the product of time, so voltage and current need to reach a certain value, and act for a certain time before the human body is harmed, that is, voltage and current both hurt people, and there is no such thing as which harm is greater, voltage and current exist at the same time, and they cannot be separated independently.

Electricity causes damage to the human body because it exceeds the load of cells, tissues, nervous system, heart and other organs, in essence, electricity does work on the human body, everyone has learned in science class the expression of electric power p=u squared divided by r, p=i squared multiplied by r. Both voltage and current in the formula are squared, and it is not possible to see who has the most effect. But practical life tells us that high voltage and low current will not cause great harm to the human body, autumn weather is dry often there will be static electricity, and the voltage of static electricity can be as high as 100,000 volts, but the amount of charge released by static electricity is very small, so the current is very small, so it will not cause harm to the human body.

Electric currents hurt. Different parts of the human body can withstand different amounts of electricity. If too much electric current flows in the human body, it will cause damage to the human body and destroy the nerves of the human body.

Electric current hurts people, voltage does not hurt people, people who are electrocuted are not injured by electricity, but because of current, current can be transmitted indiscriminately in the human body, which will hurt people's five organs.

I feel that electricity really hurts people through the electrical currents in the human body. The voltage is sometimes very small. But electricity hurts. A lot of voltage can hurt people.

I think it's the current that hurts. The degree of harm to the human body of electric shock mainly depends on the size of the current passing through the human body and the length of time it is on. The greater the current intensity, the greater the fatal danger; The longer it lasts, the more likely it is to die. ‍‍

Some people also say that the statement that voltage hurts people is wrong, for example, in winter, the electrostatic voltage generated by dry climate can reach 100,000 V, but there is no damage, that is, because the amount of charge generated by static electricity is very small, so the current formed is very small, so the damage to the human body is also small.

There are also people who oppose the statement that the current hurts people, saying that the battery can provide tens of amperes of current, and there is no special feeling to the touch, which ignores an important thing here, that is, the battery only provides a voltage of 24V, and only 12mA current is applied to the human body, which is relatively safe.

The safe voltage of the human body is AC 36V and DC 50V, but there is no mention of the safety current, because the resistance of the human body is basically fixed, about 2000. In this case, the current is about 18 mA. Therefore, only the safety voltage is generally emphasized, and the safety current is not specifically emphasized.

Some people understand voltage as a high mountain, and the two ends of the voltage can be imagined as the top and foot of the mountain, and the higher the voltage, the greater the kinetic energy of the same stone falling. Here the same stone can be understood as a voltage acting on both ends of the same resistor. Whereas, electric current can be understood as the kinetic energy generated by the fall of a stone.

Is electricity to a person current or voltage? For electric shock, who is the current and voltage.

In fact, it is the moment of electric shock, the voltage applied to the person makes the current continue to cause harm to the human body.

Electric current is the main factor that causes electric shock to injure people, and voltage is one of the factors that determine the magnitude of electric current.

When the human body comes into contact with the power supply, a circuit is formed, and the current passes from the power supply through the human body and back to the power supply. The greater the intensity of the electric current, the greater the harm to the human body, and even lead to death from electric shock. The role of voltage is to drive the flow of current, and when the voltage is very high, it is easy to pass through the insulation layer of the human body and form an electric current, thus causing harm to the human body.

However, the relationship between voltage and current is complex, and it cannot be simply assumed that high voltage is necessarily dangerous, and low voltage must be safe. At the same voltage, different circuits have different current strengths, and the greater the current intensity, the greater the harm to the human body.

Therefore, when using electrical and electronic equipment, care should be taken to keep a safe distance to avoid the occurrence of electric shock accidents. At the same time, Hongzheng should strengthen the understanding of the use and safety knowledge of electrical appliances and the study of file reform, enhance the awareness of self-protection, and avoid unnecessary injuries.

Precautions for daily electricity use

1. Installation of electrical equipment: When installing electrical equipment, it is necessary to ensure that the installation is firm, the wiring is correct, and the grounding is good to avoid electrical accidents.

2. Use electrical equipment: When using electrical equipment, it is necessary to operate correctly in accordance with the instructions, and do not overload it to avoid overheating of wires or damage to electrical equipment caused by excessive use. At the same time, do not carry out other activities while using electrical equipment, so as not to distract yourself and lead to safety accidents.

3. Prevent overheating of wires: Keep the wires clean and tidy, avoid piling up debris under the wires, and prevent overheating of the wires from causing disasters.

4. Prevent electric shock: When using electrical equipment, keep it dry and avoid electric shock. At the same time, avoid using electrical equipment in water.

5. Prevent the dampness of electrical equipment: The use of electrical equipment in a humid environment is easy to lead to electrical accidents, and moisture of electrical equipment should be avoided.

Categories: Science & Engineering.

Problem description: Can voltage cause electric shock? Is it possible that voltages below 36V can be said to be safe voltages? In nature, is there a certain current with a certain voltage? Needless to say, electricity must be hurtful, right?

Analysis: No, if you touch 10,000 volt high voltage, but there is no current for the same potential to pass through your human body in the middle of the acre is still no problem.

But in general, 36V is a safe voltage.

The safe current is, no matter how high it is, it can be fatal. In addition, you should not touch low-voltage electricity, although it is not life-threatening, it is not good for your health. Kill a lot of cells.

High-voltage electricity must not be approached by high jujubes, what I am talking about is only theoretical, you will produce a step voltage when you approach, and it is impossible to completely equip the potential.