What is the typical voltage of a standard residential outlet?

• A. 120 volts
• B. 240 volts
• C. 100 volts
• D. 360 volts

Answer: (A)

The typical voltage of a standard residential outlet in North America is 120 volts. This is the voltage level established for general household electrical supply, which is sufficient to power common appliances, lights, and electronic devices.

Using 120 volts allows for a safe and efficient distribution of electricity in homes, helping to prevent hazards associated with higher voltages. In contrast, other voltage levels, such as 240 volts, are used for specific heavy-duty appliances like dryers and ovens, which require more power but are less common for standard outlets. The voltages listed in the other options, 100 volts and 360 volts, do not align with common residential electrical standards in North America, as 100 volts is lower than typical household voltage and 360 volts exceeds safe residential supply parameters.