effet of electricity on human body

electricity and the human body

please tell me the reaction caued by a person when he is subjeted to a eleectric wire on different voltages ie.
220/440 V
11KV
33KV etc.

electricity in human body

see those links
**broken link removed**
http://www.celtoslavica.de/bibliothek/electricity.html

what electricity does to the human body

Nerve impulses are electrical in nature, adding electricity to the body scrambles the system. This causes muscles to contract (for instance the heart), and heat to be conducted through the body. If the electric currrrent is below 5 mA there is no effect on the body, at 15-20 mA trouble starts. It starts with muscular contraction (which can be grabbing - this is what can cause a person to stay locked onto an open circuit, and electrocute themselves). 100-200mA causes severe burns and ventricular defibrillation. If defib continues for longer than one cardiac cycle circulation can be affected, and the situation could become life-threatening. 60mA for over 1 second could be fatal. Over 200mA will stop the heart (which is, in fact, better than defib), but contact areas become crucial to survival. Right hand to Left hand contact is better than Right hand to Left foot because it does not cross the heart (?).
Resistance of the body: dry skin = 1000 W , wet skin = 600W , dry, cracked, burnt skin =500W, ear to ear = 100W . Damage may not show up externally, but muscle may be affected (contracted muscle may require surgery to release). Signs such as darkening of the urine indicate that the kidneys are eliminating damage (and should be checked by a physician).
(Parenthetical note: DC takes twice the current to do the damage of AC, and 60Hz AC is more dangerous than 50 Hz)
Ground Fault Interrupt circuits (GFI) are being included in residential and commercial sites to combat shock. GFI works by sensing the difference between current going out and current returning. If the difference is greater than 5 mA the circuit trips. GFI at the output of stage dimmers won’t work! Ahead of the dimmers you will also get false trips, and in-line distance affects the reliability of the GFI circuit. The latest form of protection is called Cord Fault Interrupt, and it is being installed on electric hair dryers and the like. There is also a circuit called an Arc Fault Interrupt that detects arcing and shorting to trip.
How to avoid a short: Things like removing the ground pin on an extension cord can have effects further down the line. We have a problem in Theatre, and that is the nature of “temporary” work. There is a mindset that accomplishes a repair before curtain goes up, but if the repair isn’t redone correctly the “temporary” repair may become permanent. That is why it is important to realize that you need to take the time to do it right the first time.

effects of electricity on the human body

curren flow is causes shock as a voltage may be applied with no current flow.
Just to clarify

how does electricity affect the human body

go to:

electricity in human bodies

https://en.wikipedia.org/wiki/Electric_shock

what are the effects of electricity in human body

see this:

https://en.wikipedia.org/wiki/Specific_absorption_rate

https://en.wikipedia.org/wiki/Mobile_phone_radiation_and_health


https://en.wikipedia.org/wiki/Electromagnetic_radiation_hazard