What is the standard voltage supplied by household outlets in the U.S.?

• A. 240 volts
• B. 120 volts
• C. 60 volts
• D. 30 volts

Answer: (B)

The standard voltage supplied by household outlets in the U.S. is 120 volts. This is the voltage commonly used for powering most household appliances and electronic devices, such as lamps, televisions, and kitchen appliances.

Understanding the significance of this voltage level is important for safety and compatibility. Appliances are designed to operate efficiently and safely at this voltage, ensuring that they function properly without the risk of damage or electrical hazards. In contrast, other voltages like 240 volts are typically used for larger appliances, such as dryers and ovens, but are not standard for general outlets in residential settings.

This standardization of 120 volts is consistent across the majority of households in the U.S., making it essential for anyone working with electrical systems to be familiar with this voltage to ensure proper usage and safety.