Question 48Electricity/Electronics - Assistant Engineer70% to pass
At a minimum threshold, how many milliamps of current through the body produces a condition where most people would experience respiratory paralysis and be unable to breathe while still in contact with the energized conductor?
AI Explanation
The correct answer is C) 30 mA.
The threshold for respiratory paralysis and inability to breathe due to electric current through the body is generally considered to be around 30 mA. At this level of current, the muscles responsible for breathing become paralyzed, leading to a potentially life-threatening situation if the person remains in contact with the energized conductor.
The other answer choices are not correct because 3-7 mA (A) is typically the range for muscle contraction and loss of muscle control, while 10-16 mA (B) is the range for inability to let go of the conductor. 75 mA for 5 seconds (D) is a higher level that can cause ventricular fibrillation and cardiac arrest, rather than just respiratory paralysis.
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