Which causes death of human when a certain amount of current passes through him? And what is the maximum current a human can bear?
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\$\begingroup\$ Don't you mean maximum? \$\endgroup\$– DanielCommented Jan 30, 2014 at 5:08
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4\$\begingroup\$ This question appears to be off-topic because it is about medicine, not electronics design. \$\endgroup\$– Dave TweedCommented Jan 30, 2014 at 5:33
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2\$\begingroup\$ You can read similar question 1, similar question 2, similar question 3, similar question 4 \$\endgroup\$– alexan_eCommented Jan 30, 2014 at 7:56
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\$\begingroup\$ Related/duplicate: electronics.stackexchange.com/q/19103/2028 and electronics.stackexchange.com/q/9222/2028 \$\endgroup\$– JYeltonCommented Jan 30, 2014 at 16:57
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\$\begingroup\$ Related video: youtube.com/watch?v=8xONZcBJh5A \$\endgroup\$– JYeltonCommented Feb 1, 2014 at 8:55
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2 Answers
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10mA through the heart can be enough to kill a person, regardless of voltage.
Normally, your skin has very high resistance. But if electrical current manages to get to the heart by any means, low voltage can be fatal since your internals have a lot lower resistance than your skin.
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3\$\begingroup\$ I would prefer CAN BE instead of IS. AFAIK there is no guarantee that 10 mA will kill. \$\endgroup\$ Commented Jan 30, 2014 at 6:34
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2\$\begingroup\$ It's good to have authoritative references in answers of this kind, such as "While any amount of current over 10 milliamps (0.01 amp) is capable of producing painful to severe shock, currents between 100 and 200 mA (0.1 to 0.2 amp) are lethal. Currents above 200 milliamps (0.2 amp), while producing severe burns and unconsciousness, do not usually cause death if the victim is given immediate attention. Resuscitation, consisting of artificial respiration, will usually revive the victim." - Ohio-State U \$\endgroup\$ Commented Jan 30, 2014 at 9:42
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\$\begingroup\$ I'm not sure why this was accepted, because it doesn't answer the question at all. The question wasn't what is the minimum current that can possibly be lethal. As noted in the comment above, 100-200 mA is almost automatically lethal, but higher currents are survivable because they don't cause ventricular fibrillation. The question for which I came here looking for an answer was how much higher can the current go before it's automatically fatal. There has to be a point where the current is so high it instantly fries you. That question, which is also the OP's question, remains unanswered. \$\endgroup\$ Commented Jul 31, 2019 at 12:03
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\$\begingroup\$ Oh, I just noticed, the question originally said "minimum", which didn't even makes sense, because the human body can bear a current of zero, except the miniscule current that flows across cell membranes as ions are pumped in and out. In any case, the question of what is the maximum remains unanswered. \$\endgroup\$ Commented Jul 31, 2019 at 12:12
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Actually your question contains a lot of variables. And also it depends on person to person(not very much difference though). But for average calculation I say, 100 volts at 100 milli-amperes for say just over a second or two is enough to kill a person.
answered Jan 30, 2014 at 5:10