Electric Current and Biological Effects

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Questions and Answers

Which of the following is the definition of electrocution?

  • Tissue damage produced directly by electrical current or voltage
  • Death caused by electric shock (correct)
  • Indirect or secondary injuries caused by electric shock
  • A sudden violent response to electric current flow through any part of a person's body

What is the typical range of AC current frequency for stimulatory effects to occur?

  • 5 mA
  • 0 Hz
  • 25 mA
  • 50-100 Hz (correct)

What is the maximum safe value for AC current to avoid stimulatory effects?

  • 50-100 Hz
  • 0 Hz
  • 5 mA (correct)
  • 25 mA

Which of the following is an example of a secondary injury caused by electric shock?

<p>Indirect or secondary injuries such as falls (B)</p> Signup and view all the answers

What is the maximum safe value for DC current to avoid stimulatory effects?

<p>25 mA (C)</p> Signup and view all the answers

Which of the following is the definition of electric shock?

<p>A sudden violent response to electric current flow through any part of a person’s body (B)</p> Signup and view all the answers

Which of the following is the definition of primary electrical injury?

<p>Tissue damage produced directly by electrical current or voltage (burns) (B)</p> Signup and view all the answers

Which of the following is the definition of secondary injuries related to electric shock?

<p>Indirect or secondary injuries such as falls caused by electric shock (B)</p> Signup and view all the answers

Which of the following is the most correct statement about the effects of electrical current on the human body?

<p>Stimulatory effects occur for DC current with a frequency of 0 and a current of 25 mA (A)</p> Signup and view all the answers

What is the purpose of electrical security systems-grounding?

<p>To prevent electric shock (A)</p> Signup and view all the answers

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