Certified Fire Investigator Practice Exam

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Prepare for the Certified Fire Investigator Exam with our comprehensive quiz. Tackle multiple choice questions designed to test your knowledge and enhance your readiness for the exam. Get ready to ace your exam!

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What kind of phenomenon does an electrical arc create?

  1. Low heat production

  2. High temperature luminous discharge

  3. Minimal energy flow

  4. Weighted cooling effect

The correct answer is: High temperature luminous discharge

An electrical arc creates a high temperature luminous discharge because it results from the ionization of air or another medium between two conductive materials at high voltage. This ionization allows electricity to flow through, generating an intense, bright light and significant heat. The temperature of an electrical arc can reach thousands of degrees Fahrenheit, making it capable of igniting materials nearby, which is of paramount concern in fire investigations. The luminous nature of the discharge indicates that a substantial amount of energy is being released in the form of light and heat, which is characteristic of arc-related incidents in electrical fires. This phenomenon is often encountered in fire investigations, where the analysis of burn patterns can point to electrical sources as potential ignition factors.

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