High-voltage components are labeled with a warning sign that resembles which symbol?

• A. Skull and crossbones
• B. Lightning bolt with an arrow pointing downward
• C. Flame
• D. Shield

Answer: (B)

High-voltage hazards are signaled with a symbol that uses a lightning bolt because electricity is invisible and can cause immediate harm. The bolt instantly communicates an electrical energy risk and the possibility of electric shock. The downward-pointing arrow variant reinforces that this danger comes from electrical energy that can affect you quickly, prompting you to stay clear, de-energize before work, and use proper safety measures. Other symbols—like a skull and crossbones (poison), a flame (flammable substances), or a shield (general protection)—don’t specifically indicate electric shock risk, so they don’t convey the urgent electrical hazard as clearly.