Safety and work practicesQuestion 586 of 1506

A worker grips an energized conductor and cannot let go. What will end the muscle lock-up (tetanus)?

Pulling hard on the worker's arm to free the hand
Waiting a few seconds for the muscles to tire out
Reducing the supply voltage by a small amount
Stopping the current through the worker

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Correct answer: Stopping the current through the worker

The lock-up lasts as long as the shock current flows, so the current path must be broken.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 3.2: Physiological Effects of Electricity

Questions last reviewed: 18 October 2026

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