Can a very high current electrocute a person, and the lowest few amperes of current can electrocute

Death from electric shock can be broadly divided into two main categories: scorch and cardiac arrest. Needless to say, scorching, generally speaking, as long as the power generated on the human body is large, it will naturally be scorched, in this case it can be divided into scorched and lucky not.

Scorched people. The difference between the two is the size of the overall resistance (including clothing, shoes, etc.), because most of the contacts in daily life are constant voltage sources, so it is possible that two people are exposed to the same voltage but the result is not.

Same situation. At this time, different currents can be derived from the overall internal resistance. Therefore, it is thought that it can be summarized as the effect of electric current.

The current that causes heart problems is related to the way the current is distributed in the human body when it is shocked, and if the main path of the current is between the legs due to reasons such as step voltage, then the heart is less affected, so in this case, the current is also considered.

Whether it can make people lose their lives, it is not the voltage but the current that plays a major role, and there are often people who accidentally touch the high-voltage electricity and break their legs or arms, but they do not die. On the contrary, the human heart is very sensitive to electric current, and if the current exceeds 50mA, it is easy to cause the heart to stop. If the electric shock current flows directly through the heart, the current of about 1mA (DC

ORAC) may cause ventricular fibrillation.

Of course, this does not mean that voltages below 36V are necessarily safe, but also the condition of the human body at that time, such as whether it is humid or the length of time the human body is in contact with the power supply.

In short, if the current is very high, the probability of killing a person is the highest.

It's 10mA.

In general, the safe voltage that the human body can withstand is 36 volts, and the safe current is 10 milliamps. When the resistance of the human body is constant, the higher the voltage that the human body is exposed to, the greater the current through the human body, and the more serious the damage to the human body.

The safe current is also known as the safe flow rate or allowable continuous current, and the human body safety current is the lowest value of the current passing through the human body. Generally, a current of 1 mA is felt when it passes, and it is difficult for the human body to get rid of it above 25 mA. 50mA is life-threatening.

Mainly, it can lead to cardiac arrest and respiratory paralysis.

Generally speaking, it is the electric current.

Death from electric shock can be broadly divided into two main categories: scorch and cardiac arrest. Needless to say, as long as the power generated on the human body is large, it will naturally be burned, and in this case it can be divided into those who are charred and those who are lucky not to be burned.

The difference between the two is the size of the overall resistance (including clothing, shoes, etc.), because most of the constant voltage sources that are exposed to in daily life may occur when two people are exposed to the same voltage but the results are different. At this time, different currents can be derived from the overall internal resistance. Therefore, it is thought that it can be summarized as the effect of electric current.

The current that causes heart problems is related to the way the current is distributed in the human body when it is shocked, and if the main path of the current is between the legs due to reasons such as step voltage, then the heart is less affected, so in this case, the current is also considered.

It is not voltage or current that kills people, but power. No matter how high the voltage is, the current is small and the electricity does not kill people, such as the high voltage in the color TV has 25000 volts, but the current is less than 1 milliampere, and it is so electric that it is just a click, and it will not electrocute people. The voltage is low, no matter how big the current is, the electricity will not die, such as the common lead-acid battery, the voltage is only 12 volts, even if the current reaches 100 amps, touching the two poles of the battery, it will not electrocute people.

Therefore, only when the electricity is high to a certain level (the state sets it at 36 volts) and the current exceeds 10 milliamperes, it will cause harm to the human body. Only high voltage, high current, i.e. high power, is enough to kill people.

Can you measure the current when there is no voltage? Can you measure the voltage where there is no current?

Whether it is a low voltage or a high voltage, the flow of electric current in the human body will cause harm. Through a large number of data studies and experiments, it is possible to cause death (flowing through the heart) when the human body flows an electric current of 2 mA.

In electromagnetism, the amount of electricity passing through any cross-section of a conductor per unit time is called current intensity, referred to as current, the current symbol is i, and the unit is ampere (a), referred to as "ampere".

Electrically it is specified that the direction of the directional flow of a positive charge is the direction of the current. In addition, in the project, the directional flow direction of the positive charge is also used as the direction of the current, and the magnitude of the current is expressed by the charge Q flowing through the conductor section in the unit time difference, which is called the current intensity.

Three major effects of electric current:

1. Thermal effect.

When the conductor is energized, it generates heat, and this phenomenon is called the galvanic thermal effect. For example, Joule's law, which is more familiar, is a law that quantitatively states that conduction current converts electrical energy into thermal energy.

2. Magnetic effect.

Magnetic Effect of Electric Current: Oster discovered that any wire that is connected with an electric current can produce a magnetic field around it, which is called the magnetic effect of electric current.

3. Chemical effects.

The chemical effect of electricity is mainly due to the chemical change of matter due to the participation of charged particles (electrons or ions) in the electric current. Water electrolysis or electroplating in chemistry are chemical effects of electric current. <>

A large electric current does not necessarily electrocute a person, but an electric current through the human body will cause death. Because the human body has a certain resistance value, the voltage greater than 36V is possible to pass through the relatively high current of the human body, that is, the higher the voltage, the greater the current through the human body; If the voltage is small (12V), the current through the body is insignificant and safe, despite the large power supply capacity (100A).

The difference between voltage and current:

1. High voltage is not necessarily fatal, not to mention that high voltage does not necessarily produce strong current. Static electricity does not have an electric current through the human body.

2. About the safety voltage: 36V when dry, but even up to 12V below when wet due to the small resistance. The safe current through the human body is basically constant, about a few hundred microamperes (memory may be mistaken).

3. About the fatality of electric shock: local burning (dehydration) has a certain effect, but the fatal is the cessation of heart function. In addition, the electric current can have a great impact on the brain and other nervous organs.

The time of electrocution is also a very important factor. Within 220V, it basically does not cause damage to the human body.

4. About electric shock "being sucked by electricity": It is related to the low-level reflection of people. For example, if the fingers are electrocuted, they will involuntarily clench their fists. Therefore, experienced electricians often use the back of their fingers to judge whether the low-voltage line is live, so that it is not easy to cause danger caused by continuous electric shock by holding the wire.