Public utility companies regulate the oscillation of alternating current to 60 hertz because this frequency has been found to be the most safe for exposure to the human heart muscle and thus to prevent most electrocutions.

Question

Quizplus · Accepted Answer

The choice of 60 hertz for alternating current in the United States (and 50 hertz in many other parts of the world) is based on historical and engineering considerations, not specifically because it is the safest frequency for human heart muscle.

Public Utility Companies Regulate the Oscillation of Alternating Current to 60