Electricity: Practice 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?
  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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