Question 44Electricity & Electronics - QMED

The correct answer is C) 30 mA. At a minimum threshold, 30 mA of current through the body can produce respiratory paralysis and the inability to breathe while still in contact with the energized conductor. This is based on the commonly cited "let-go" threshold, where a person may become unable to voluntarily release an energized conductor. Currents below 30 mA are generally not considered high enough to cause respiratory paralysis, while higher currents around 75 mA for 5 seconds (option D) would be dangerously high and potentially fatal. The other options are incorrect because 3-7 mA (option A) is generally not enough to cause respiratory paralysis, and 10-16 mA (option B) is considered the threshold for ventricular fibrillation, which is a more serious condition than just respiratory paralysis.