Which one is more dangerous AC or DC MCQ

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Which one is more dangerous:

  1. AC
  2. DC
  3. Both are equally dangerous

Correct answer: 1. AC

AC or alternating current is four to five times more dangerous than DC.

Reasons why AC is more dangerous than DC

Severe muscular contractions

AC causes more sever muscular contractions than DC

AC Stimulates sweating

The alternating current prompts sweating which in turn lowers the resistance and the lower the resistance the more is the current flow and the higher the hazard becomes.

Frequency of AC

The frequency of alternating current plays a fundamental role. The 50 and 60 Hz frequency ranges are unfortunately the most dangerous ranges. A 50 Hz or 60 Hz waveform is more dangerous than a 2000 or 5000 Hz AC wave of the same magnitude. The reason behind this is the at 50 and 60 Hz the shock pulses stimulate the body muscles and interfere in the most dangerous way as compared to 2000 or 5000 Hz.

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Source:

  1. https://www.asc.ohio-state.edu/physics/p616/safety/more_current.html
  2. https://energyeducation.ca/encyclopedia/Direct_current
  3. https://en.wikipedia.org/wiki/Alternating_current

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