alleryStart learning →Many electrical safety rules set the maximum allowed shock current at which value?
A5 mA
B1 mA
C50 mA
D300 mA
Answer & Solution
Correct answer: A. 5 mA
1. Shocks are apparently harmless for currents below 5 mA.
2. Because of that, a great number of safety rules take 5 mA as the maximum allowed shock.
3. 1 mA is only the threshold of sensation, the smallest current that can be felt at all.
4. 50 mA is already at the onset of pain, and 300 mA sits in the range where ventricular fibrillation is possible.
_Source: OpenStax College Physics (CC BY 4.0), Ch 20 "Electric Current, Resistance, and Ohm's Law", section 20.6 Electric Hazards and the Human Body_
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