Red Seal Electrician Practice
Safety and work practicesQuestion 612 of 1506

A worker shocked at the job feels fine after a short rest. Why should the worker still be watched closely?

  1. The shock will make the voltage rise again in the body.
  2. Heart trouble can show up as much as several hours later.
  3. A shock only hurts the skin, so the rest is not needed.
  4. The muscles will become frozen again within minutes.
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Correct answer: Heart trouble can show up as much as several hours later.

A shock too weak to stop the heart at once can still cause irregular beats or a heart attack later.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 3.6: Emergency Response

Practice safety and work practices

Questions last reviewed: 18 October 2026