Electrical Standards — CompTIA A+ Core 1 (220-1101) Practice Questions

Electrical standards govern the voltage levels, connector types, and safety requirements for power delivery to computing equipment, and they appear on the CompTIA A+ Core 1 exam in the context of international compatibility and power supply selection. North American systems typically run on 120 V at 60 Hz, while much of the world uses 230 V at 50 Hz, and technicians must recognize when a power supply's input range matches the local standard to avoid damaging equipment. Standards bodies and certifications such as UL, CE, and 80 Plus define safety and efficiency baselines that appear in product specifications. Understanding these standards helps technicians select appropriate components and advise on power infrastructure.

Free questions on electrical standards