Human Resistance vs. Circuit Conductors

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anissbenthami
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Why do I get electrically shocked when I touch a circuit knowing that the human body has a higher resistance than conductors in circuits and current tends to flow through the path of least resistance?
Have you ever wondered why you can get an electric shock when touching a circuit, even though the human body has a higher resistance than the conductors in circuits? It goes against my belief that electricity always follows the path of least resistance.
 
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anissbenthami said:
It goes against my belief that electricity always follows the path of least resistance.
That belief is false. Current flows anywhere there is a path available, but it flows according to the resistance of the path; higher resistance means less current, lower resistance means higher current.

The resistance of the body may have a higher resistance than the circuit involved, but it only takes a few milliamps of current to induce a "shock".
 
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You can work out the ratio of wattage that will pass through both paths of this circuit simultaneously.
1694029634945.png

Not a lot will pass through R2. But it won't be zero.
 
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DaveC426913 said:
You can work out the ratio of wattage that will pass through both paths of this circuit simultaneously.
View attachment 331607
Not a lot will pass through R2. But it won't be zero.
So I will be considered as a parallel resistance in the circuit
 
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anissbenthami said:
So I will be considered as a parallel resistance in the circuit
Exactly.
 

FAQ: Human Resistance vs. Circuit Conductors

What is the relationship between human resistance and circuit conductors?

Human resistance refers to the electrical resistance offered by the human body to the flow of electric current, while circuit conductors are materials that allow electric current to flow through them with minimal resistance. The relationship between the two is crucial in ensuring safety in electrical systems, as the human body can be harmed by currents that are easily conducted through circuit conductors.

How does the resistance of the human body compare to that of typical circuit conductors?

The resistance of the human body is significantly higher than that of typical circuit conductors. While conductors like copper or aluminum have resistances measured in micro-ohms or milli-ohms, the human body typically has a resistance ranging from 1,000 ohms (wet skin) to 100,000 ohms (dry skin). This high resistance helps protect the body from low levels of electric current but can still be dangerous at higher voltages.

What factors affect the resistance of the human body?

Several factors affect the resistance of the human body, including the condition of the skin (wet or dry), the path the current takes through the body, the area of contact with the electrical source, and the voltage applied. Wet skin significantly lowers the body's resistance, increasing the risk of electric shock.

Why is it important to consider human resistance in electrical safety?

Considering human resistance is vital in electrical safety because it determines the potential severity of electric shocks. Understanding how the human body responds to different levels of current and voltage helps in designing safer electrical systems, protective equipment, and safety protocols to minimize the risk of injury or fatality.

What safety measures can be taken to protect against electric shock given the human body's resistance?

To protect against electric shock, several safety measures can be implemented: using insulation on wires and electrical devices, grounding electrical systems, employing circuit breakers and ground fault circuit interrupters (GFCIs), maintaining dry working conditions, and ensuring proper personal protective equipment (PPE) like rubber gloves and boots. These measures help prevent dangerous levels of current from passing through the human body.

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