Why do we get SHOCK if we touch current?

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Discussion Overview

The discussion revolves around the reasons behind the sensation of electric shock when a person comes into contact with electrical current. It explores the physiological effects of current on the human body, the role of resistance, and the conditions under which electric shock can be harmful or fatal.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant questions why electric shock occurs when touching current and mentions severe consequences like charring or death from high voltage exposure.
  • Another participant explains that current passing through the body converts electrical energy to heat, causing internal cooking due to the body's resistance.
  • A different viewpoint highlights that the human nervous system operates on low voltage, and even mild currents can stimulate nerves, leading to sensations ranging from tingling to pain.
  • One participant emphasizes that it is the current, not the voltage, that is lethal, providing an example of how a 9-volt battery can be dangerous under certain conditions.
  • Another participant shares an experience illustrating how salt water increases skin conductivity, making even low voltages from a car battery capable of delivering a painful shock.

Areas of Agreement / Disagreement

Participants express varying perspectives on the mechanisms of electric shock, particularly regarding the roles of voltage and current, as well as the effects of skin conductivity. There is no consensus on the best explanation for the phenomenon.

Contextual Notes

Some claims depend on specific conditions, such as skin moisture and the presence of electrolytes, which may affect the conductivity and the experience of electric shock.

Srini karthik
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why do we get SHOCK if we touch current??

when current pass through our body we get feeling of shock., why it happen?? person may turn black or die if exposed to high volt shock for long time?? why it hapens?:rolleyes:
 
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Current through a resistance converts electrical energy to heat. The human body is mostly a resistance to current so it heats up. It's not supposed to be heated like that especially with high voltage or high current, so the body literally cooks like food on a hot plate but it does this internally. You are cooked from the inside like food. Like food, you sometimes burn and char.
 


your nerves are an electro-chemical system that work on fractions of a volt.

mild amounts of electricity passing through them gives that "tingle"
a little more hurts because it stimulates them harder

1/50 of an amp through the area of your heart can make it stop.
 


One thing important to note, it is not the voltage that kill, it's the current that kill. You can kill someone with a 9 volt battery. If you have both of you feet in two separate bucket of salt water and you connect two electrodes connected to a 9 volt battery one into each bucket of water, you'll be in deep dodo! Only take 10 to 20mA or so to fry a person.

The reason if you touch higher voltage, you only get a slight shock, is because the top skin is dead and dry and not conducting any electricity. If you dip in electrolyte and get into the porous, you get good connection into the blood which has salt and you complete the circuit. If you don't believe me, lick the two terminals with your tongue! I test 9 volt battery with this method, if it hurts, the battery is good!
 


if you've ever been in a small motorboat in the ocean, with everything covered with salt spray,

you'll find you cannot hold on to even the 12 volt battery terminal.
Salt water makes your skin so conductive that an ordinary car battery gives a painful shock.

So make sure your battery terminals are good and tight before you leave the dock.
It can be very difficult to tighten a loose one out there.
 

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