Safety and work practicesQuestion 597 of 1506

What voltage is generally taken in industry as a cautious threshold above which a voltage is dangerous?

30 V
12 V
120 V
600 V

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Correct answer: 30 V

The text says to treat any voltage above 30 V as a shock threat.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 3.4: Ohm’s Law (again)

Questions last reviewed: 18 October 2026

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