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Electrical current is a fascinating and powerful tool. It can be both safe and deadly: the emissions from a Tesla coil, while awe inspiring, pass harmlessly around and through humans; yet, ramp up the current enough, and severe effects can occur.

The major factors that affect a person are: the amount of current, measured in amperes or "amps"; the path the current takes through the body (i.e. through the heart); and the length of time the body is exposed as a circuit.

The voltage, environmental moisture, whether the heart is in a beat or not, and the person's health can also affect the severity of the shock. The following list details effects of current. Note that 1000 milliamperes (mA) equates to 1 ampere (A).

1 mA of current causes a bit of a tingling sensation, but can be dangerous under some conditions.

5mA of current results in a slight painless shock. Strong involuntary reactions can cause injuries to the person.

6-16mA results in a painful shock, and the individual is less likely to have control over their muscles.

17-99mA results in extreme pain, respiratory arrest and strong muscular contractions. Death is quite probable at this point.

100mA-2A results in uneven, uncoordinated pumping of the heart. Nerve damage begins here. Death is highly likely.

At more than 2 amperes, the heart stops, internal organs begin to cook, and sever burns occur. Death is quite probable without immediate medical assistance.

See the related links below for further details.

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12y ago

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