Why is electricity transmitted from human to human?
The effect of electricity on the human body
About 10,000 people are killed each year in the world by electrocution, and this includes people who are struck by lightning, industrial accidents in the workplace involving transport workers, electricians, and installers of large electrical equipment.
and other individuals whose job is in close proximity to high levels of electrical power every day. Although it sounds like a lot, the total represents less than 1% of all accidental deaths in the country. Compare that to the nearly 42,000 poisonings or co-morbidities. About 34,000 car accidents.
When the body is exposed to electricity, the muscles may be stimulated with electricity, and the effect depends on the strength of the current and the type of muscle that is transmitted through it.
We have all felt a buzzing or tingling sensation when an injury occurs. This is the effect of a current of up to 0.25 milliamps (mA) when it enters the body. When a current higher than 10 milliamps travels through the flexor muscles in the body, it causes a sudden, continuous contraction.
So the victim may be unable to leave the source of the current, which makes the duration of contact longer and increases the intensity of the shock, but when a current higher than 10 mA is transmitted through the extensor muscles, it causes a violent spasm, if the affected muscles are the thigh extensors that lengthen The limbs away from the body, the victim may be pushed, sometimes several meters away!
Likewise, muscles, ligaments, and tendons may tear as a result of the sudden contraction caused by an electric shock. Tissue can also be burned if the shock persists or if the current is too high.
About 10,000 people are killed each year in the world by electrocution, and this includes people who are struck by lightning, industrial accidents in the workplace involving transport workers, electricians, and installers of large electrical equipment.
and other individuals whose job is in close proximity to high levels of electrical power every day. Although it sounds like a lot, the total represents less than 1% of all accidental deaths in the country. Compare that to the nearly 42,000 poisonings or co-morbidities. About 34,000 car accidents.
When the body is exposed to electricity, the muscles may be stimulated with electricity, and the effect depends on the strength of the current and the type of muscle that is transmitted through it.
We have all felt a buzzing or tingling sensation when an injury occurs. This is the effect of a current of up to 0.25 milliamps (mA) when it enters the body. When a current higher than 10 milliamps travels through the flexor muscles in the body, it causes a sudden, continuous contraction.
So the victim may be unable to leave the source of the current, which makes the duration of contact longer and increases the intensity of the shock, but when a current higher than 10 mA is transmitted through the extensor muscles, it causes a violent spasm, if the affected muscles are the thigh extensors that lengthen The limbs away from the body, the victim may be pushed, sometimes several meters away!
Likewise, muscles, ligaments, and tendons may tear as a result of the sudden contraction caused by an electric shock. Tissue can also be burned if the shock persists or if the current is too high.
Why is electricity transmitted from one person to another
In fact, there are a lot of misconceptions about the fact that the human body is a good conductor of electricity, the human body is not a superconductor of electricity.
The resistance of the human body is estimated in kilo ohms, which may raise the question of why the human body remains stuck in the wires when exposed to current, the human body is very sensitive even to the milliamp current or in the language of the average person, humans can easily sense the current.
Now, when we are exposed to the current, our nervous system fails. That is, no electrical impulses are transmitted in the body (through which the blood sends tasks to different organs.
Your body is actually a poor conductor of electricity, which is why people don't drop like flies from contact with electric current.
And blood, nerves, and certain other parts of the body are electrical conductors. Nerves have to conduct electricity because that's how they work, and many cells in your body are loaded with moving ions like calcium in order to perform their basic functions.
The blood carries the ions both to get them where you need them and to maintain the osmotic pressure and acidity, so the skin is a conductor, but a lot of the dermal conduction has to do with the oils and what's on your skin, if it's dry, its resistance is much higher.
And your skin has a very high resistivity, much higher than anything we normally use as a conductor, your internal organs have a lower resistivity but still much higher than wire or most metals.
Our AC resistance is much lower than our DC resistance, because our skin acts like a capacitor allowing more current to flow than AC voltage.
The human body consists of 75% water, especially water that is not pure and full of ions such as those found in blood-forming cells and other tissues, so when you touch a person who is exposed to electricity, electric charges will be transmitted to you with the same strength.
In fact, there are a lot of misconceptions about the fact that the human body is a good conductor of electricity, the human body is not a superconductor of electricity.
The resistance of the human body is estimated in kilo ohms, which may raise the question of why the human body remains stuck in the wires when exposed to current, the human body is very sensitive even to the milliamp current or in the language of the average person, humans can easily sense the current.
Now, when we are exposed to the current, our nervous system fails. That is, no electrical impulses are transmitted in the body (through which the blood sends tasks to different organs.
Your body is actually a poor conductor of electricity, which is why people don't drop like flies from contact with electric current.
And blood, nerves, and certain other parts of the body are electrical conductors. Nerves have to conduct electricity because that's how they work, and many cells in your body are loaded with moving ions like calcium in order to perform their basic functions.
The blood carries the ions both to get them where you need them and to maintain the osmotic pressure and acidity, so the skin is a conductor, but a lot of the dermal conduction has to do with the oils and what's on your skin, if it's dry, its resistance is much higher.
And your skin has a very high resistivity, much higher than anything we normally use as a conductor, your internal organs have a lower resistivity but still much higher than wire or most metals.
Our AC resistance is much lower than our DC resistance, because our skin acts like a capacitor allowing more current to flow than AC voltage.
The human body consists of 75% water, especially water that is not pure and full of ions such as those found in blood-forming cells and other tissues, so when you touch a person who is exposed to electricity, electric charges will be transmitted to you with the same strength.
Does the natural electricity in the body pass from one person to another
Scientists have explained that the human body stores many latent electric charges, and such charges are also present in inanimate objects that are in a state of electrical equilibrium, meaning that the amount of positive charges in them is equal to the amount of negative charges
In addition, the charges move freely from a body with many charges to a body that carries fewer charges to achieve a balance between the amount of accumulated charges, and when they move, the current is transmitted and the electric spark that we see is generated.
What is the reason for the presence of electricity inside the body?
- Clothes that conduct electric current, such as wool and nylon, in addition to the frequent use of electrical tools.
- Eat large amounts of salt.
Scientists have explained that the human body stores many latent electric charges, and such charges are also present in inanimate objects that are in a state of electrical equilibrium, meaning that the amount of positive charges in them is equal to the amount of negative charges
In addition, the charges move freely from a body with many charges to a body that carries fewer charges to achieve a balance between the amount of accumulated charges, and when they move, the current is transmitted and the electric spark that we see is generated.
What is the reason for the presence of electricity inside the body?
- Clothes that conduct electric current, such as wool and nylon, in addition to the frequent use of electrical tools.
- Eat large amounts of salt.
How do you save someone who is electrocuted?
The first thing you should do is unplug the power supply, but do not touch the victim until you are sure that the power supply is turned off so that you do not get electrocuted, so be especially careful in wet areas, such as bathrooms because water conducts electricity.
It may be safer to turn off the building's electrical current if possible. To be absolutely sure, the first aid for electric shock includes:
- Verify that it is necessary to start cardiopulmonary resuscitation (CPR).
- Call the rescue, for an ambulance, if you are unsure of resuscitation techniques, the ambulance call taker will give you easy-to-follow instructions over the phone, so you can increase the person's chances of survival until the ambulance arrives.
- If his breathing is steady and he responds to you, give him 20 minutes of cool running water.
The first thing you should do is unplug the power supply, but do not touch the victim until you are sure that the power supply is turned off so that you do not get electrocuted, so be especially careful in wet areas, such as bathrooms because water conducts electricity.
It may be safer to turn off the building's electrical current if possible. To be absolutely sure, the first aid for electric shock includes:
- Verify that it is necessary to start cardiopulmonary resuscitation (CPR).
- Call the rescue, for an ambulance, if you are unsure of resuscitation techniques, the ambulance call taker will give you easy-to-follow instructions over the phone, so you can increase the person's chances of survival until the ambulance arrives.
- If his breathing is steady and he responds to you, give him 20 minutes of cool running water.