Shock and Ohh !

February 26, 2008

While browsing through my copy of Electric Circuits by Nilsson and Riedel, I came across a table which listed the physiological reactions to current levels in the human body:

REACTION                     CURRENT

Barely perceptible             3-5 mA

Extreme pain                     35-50 mA

Muscle paralysis                 50-70 mA

Heart Stoppage                 500 mA

…and then the quote, “The numbers in this table are approximate; they are obtained from an analysis of accidents because, obviously, it is not ethical to perform electrical experiments on people”.


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