Crucial Exams

BCEN CEN Practice Question

Which statement best describes the comparative hazards of alternating current (AC) and direct current (DC) in low-voltage (< 1000 V) electrical injuries?

  • The type of current is irrelevant; only the duration of contact determines the severity of electrical injury.

  • AC is generally more dangerous than DC because it produces tetanic muscle contractions and can trigger ventricular fibrillation at lower current intensities.

  • AC and DC carry equal risk; tissue damage depends only on the applied voltage, not on the type of current.

  • DC is more dangerous than AC because it more readily induces ventricular fibrillation at lower current intensities.

BCEN CEN
Environment and Toxicology Emergencies, and Communicable Diseases
Your Score:
Settings & Objectives
Random Mixed
Questions are selected randomly from all chosen topics, with a preference for those you haven’t seen before. You may see several questions from the same objective or domain in a row.
Rotate by Objective
Questions cycle through each objective or domain in turn, helping you avoid long streaks of questions from the same area. You may see some repeat questions, but the distribution will be more balanced across topics.

Check or uncheck an objective to set which questions you will receive.

Wipe Score
Bash, the Crucial Exams Chat Bot
AI Bot