alleryStart learning →Over what current range does ventricular fibrillation become possible?
A5 to 10 mA
B10 to 20 mA
C100 to 300 mA
D20 to 50 mA
Answer & Solution
Correct answer: C. 100 to 300 mA
1. Ventricular fibrillation is a massively irregular and often fatal beating of the heart.
2. Its threshold lies between 100 and 300 mA for a one second shock through the trunk.
3. Most electrical shock fatalities happen because the current put the heart into fibrillation.
4. The condition often persists after the shock ends, which is what makes it fatal.
5. 10 to 20 mA is the cannot let go band, painful and dangerous but below the fibrillation threshold.
_Source: OpenStax College Physics (CC BY 4.0), Ch 20 "Electric Current, Resistance, and Ohm's Law", section Shock Hazards_
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