Electricity: Practice Question

Question

Which of the following electrical currents is an approximate minimum current causing muscular contraction forcing the victim to hold on to the electrical source?

Answer Choices

  1. 16 milliamperes
  2. 1 milliampere
  3. 100 milliamperes
  4. 2000 milliamperes
  5. 5 milliamperes
Show Answer and Explanations

16 milliamperes — Correct answer

Correct. Approximately 16 milliamperes causes the victim to hold on to the electrical source.

1 milliampere

Incorrect. 1 milliampere causes an uncomfortable tingling sensation.

100 milliamperes

Incorrect. 100 milliamperes causes ventricular fibrillation.

2000 milliamperes

Incorrect. 2000 milliamperes causes asystole.

5 milliamperes

Incorrect. 5 milliamperes can cause a painful shock; it is also the approximate amperage that triggers ground fault current interrupters.

Summary

Summary: Approximately 16 milliamperes causes the victim to hold on to the electrical source, and 100 milliamperes causes ventricular fibrillation.
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