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This post was last edited by iove018 on 2022-5-30 at 15:35. 1. Electric shock accidents are those caused by the energy in the form of electric current, and they are divided into electric shock and electrical burns. Among the following electric shock injuries, which one constitutes an electric shock? ( ) A. Arc burns B. Electric burns C. Skin metallization D. Step voltage electric shock. Answer: D. Explanation: Based on the way the human body comes into contact with a live conductor and the path through which current flows through the body, electric shocks can be classified as single-phase electric shocks, two-phase electric shocks, and step voltage electric shocks. Based on the different forms in which electrical current is converted into energy that acts on the human body, electrical injuries are classified into arc burns, electric burns, skin metallization, electric branding, electromechanical injuries, electric eye injury, and other such damages. Factors of electric shock accidents Types of electric shock accidents 2. Direct contact electric shock occurs when touching a live electrical conductor that is under normal conditions. Indirect contact electric shock occurs when touching a conductive object that is not charged under normal conditions but becomes charged under fault conditions. Among the following electric shock accidents, which one belongs to indirect contact electric shock? ( ) A. While cleaning the distribution box, a worker’s finger came into contact with the switch, resulting in an electric shock. B. While cleaning the control cabinet, a worker’s arm touched a wiring terminal, causing an electric shock. C. During emergency repairs on live circuits, an insulating shoe was punctured by a nail, leading to an electric shock. D. While using a drill, the drill leaked electricity, causing the worker to suffer an electric shock. Answer: D. Explanation: Indirect electric shock occurs when a person comes into contact with a conductor that is not charged under normal conditions but becomes charged accidentally under fault conditions (such as touching the casing of a device with electrical leakage); it is also known as electric shock under fault conditions. Grounding, neutral connection, equipotential bonding, etc., are safety measures to prevent indirect contact electric shock. Option D: A drill is not electrified under normal conditions, but it becomes electrified when faulty, resulting in electric shock; this constitutes indirect contact electric shock. Elements of electric shock accidents: Electric shock