Human Resistance vs. Circuit Conductors

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SUMMARY

The discussion centers on the phenomenon of electric shocks experienced by humans when touching circuits, despite the higher resistance of the human body compared to circuit conductors. It clarifies that electricity does not solely follow the path of least resistance; rather, it flows through all available paths based on their resistance levels. Even though the human body has higher resistance, it can still conduct enough current to induce a shock, typically requiring only a few milliamps. The concept of current division is highlighted, emphasizing that while the body acts as parallel resistance in a circuit, it still allows some current to pass through.

PREREQUISITES
  • Basic understanding of electrical circuits
  • Knowledge of resistance and current flow
  • Familiarity with Ohm's Law
  • Concept of parallel resistance in circuits
NEXT STEPS
  • Study the principles of current division in electrical circuits
  • Learn about Ohm's Law and its applications in circuit analysis
  • Explore the effects of electric shock on the human body
  • Investigate the characteristics of conductors and insulators
USEFUL FOR

Electrical engineers, physics students, safety professionals, and anyone interested in understanding the interaction between human resistance and electrical circuits.

anissbenthami
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TL;DR
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.
 

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