Question 50Electricity & Electronics - QMED
70% to passAt a minimum threshold, how many milliamps of current through the body produces a condition where most people would be unable to let go of the energized electrical conductor due to involuntary muscular contraction?
A3 to 7 mA
B10 to 16 mA
C30 mA
D75 mA for 5 sec.
AI Explanation
The correct answer is B) 10 to 16 mA. This range of 10 to 16 milliamps is the minimum threshold where most people would be unable to let go of an energized electrical conductor due to involuntary muscular contraction. This is based on established safety standards and guidelines for electric shock hazards. The other options are incorrect - 3 to 7 mA is too low, 30 mA is too high, and 75 mA for 5 seconds is also too high to represent the minimum threshold for this condition. The 10 to 16 mA range is considered the lower end of the "let-go" threshold, where the muscular contraction becomes strong enough to prevent the person from voluntarily releasing the conductor.
Related Questions
Q453:Which of the following statements concerning electrical cables is correct? Q386:As shown in figures "A", "B", "C", and "D" of the illustration, what is the usua... Q255:In terms of voltage potential and current sources, how are shunt wound, series w... Q161:If a digital multimeter set up to measure AC volts reads slightly above 'zero' w... Q14:For what purpose are time delayed or delayed action-type fuses used?
Ready to test your knowledge?
Take a Electricity & Electronics - QMED Practice ExamOfficial Resources