3.0 Electrocution (Focus Four) OSHA 10 Practice Quiz
45 exam-style questions covering 11% of the OSHA 10 exam. Instant feedback on every answer, progress tracking, no signup required.
This domain is part of the OSHA 10-Hour Construction practice test. Each question is tagged by exam objective and difficulty so you can drill exactly the areas you need.
Sample Questions
Which condition is an electrical hazard on a construction site?
- A. An exposed energized conductor that workers could contact
- B. A properly stored nonconductive tool
- C. A safety sign that warns workers about energized equipment
- D. A dry wooden barricade placed to keep workers away
Exposed energized conductors can shock or electrocute workers. This is the correct answer.
Which worker action increases electrocution risk?
- A. Using metal tools near energized electrical components
- B. On the project, a properly stored nonconductive tool
- C. On the project, a safety sign that warns workers about energized equipment
- D. On the project, a dry wooden barricade placed to keep workers away
Conductive tools can create a path for electrical current. This is the correct answer.
Why is damaged insulation on a cord dangerous?
- A. On site, a safety sign that warns workers about energized equipment
- B. It can expose energized parts and allow shock or electrocution
- C. On site, a dry wooden barricade placed to keep workers away
- D. A cord inspected and found undamaged before use
Damaged insulation can remove the barrier between workers and electricity. This is the correct answer.
Which statement about electrical hazard recognition is correct?
- A. At the worksite, a safety sign that warns workers about energized equipment
- B. Even lower voltage can injure or kill under the wrong conditions
- C. At the worksite, a dry wooden barricade placed to keep workers away
- D. On the project, a cord inspected and found undamaged before use
Electrical injury depends on current path, conditions, and exposure. This is the correct answer.
On site, why is damaged insulation on a cord dangerous?
- A. In this case, a safety sign that warns workers about energized equipment
- B. On site, it can expose energized parts and allow shock or electrocution
- C. In this case, a dry wooden barricade placed to keep workers away
- D. During work, a cord inspected and found undamaged before use
Damaged insulation can remove the barrier between workers and electricity. This is the correct answer.
A crew is reviewing Focus Four electrocution hazards before starting work. Which situation should be treated as an electrical hazard?
- A. During the shift, a dry wooden barricade placed to keep workers away
- B. On site, a cord inspected and found undamaged before use
- C. Water collecting around temporary electrical equipment
- D. On site, a properly stored nonconductive tool
Water can increase the chance of electrical shock when electrical equipment is present. This is the correct answer.
Which condition requires attention before work continues?
- A. In the field, a dry wooden barricade placed to keep workers away
- B. At the worksite, a cord inspected and found undamaged before use
- C. A burning smell or heat from electrical equipment
- D. At the worksite, a properly stored nonconductive tool
Heat or odor may indicate electrical failure or overload. This is the correct answer.
What is a warning sign of unsafe electrical work?
- A. During the shift, a cord inspected and found undamaged before use
- B. During the shift, a properly stored nonconductive tool
- C. During the shift, a safety sign that warns workers about energized equipment
- D. A panel cover is missing and energized parts are accessible
Missing covers can expose workers to energized parts. This is the correct answer.
Key Terms in This Domain
- Approach distance: Minimum safe distance from energized power lines for unqualified workers and equipment
- Qualified person (electrical): Worker trained in construction or operation of electric equipment and the hazards involved
- Hand protection: Gloves selected for the specific hazard: cut, chemical, electrical, abrasion, or thermal
- Housekeeping: Keeping work areas free of debris, scrap, and tripping hazards, first line of defense for slips, trips, and fires
- OSH Act: The 1970 federal law that created OSHA and established worker safety rights and employer duties
- General duty clause: OSH Act Section 5(a)(1): employer must furnish a workplace free from recognized hazards likely to cause death or serious physical harm
- OSHA complaint: A worker may file a confidential complaint requesting an OSHA inspection of a hazardous workplace
- Whistleblower protection: Section 11(c) prohibits retaliation against workers who exercise OSHA-protected rights
- Safety net system: Net installed below a work surface to catch workers who fall
- Anchorage: Secure point capable of supporting at least 5,000 lbs per worker, or designed by a qualified person with a 2:1 safety factor
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Other OSHA 10 Domains
- 1.0 Introduction to OSHA
- 2.0 Falls (Focus Four)
- 4.0 Struck-By Hazards (Focus Four)
- 5.0 Caught-In or Between (Focus Four)
- 6.0 Personal Protective Equipment
- 7.0 Health Hazards in Construction
- 8.0 Site Safety and Elective Topics
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