Final answer:
Electrical outlets are usually placed at 12 to 18 inches from the floor in homes, and they are designed to deliver a consistent voltage of 110 volts in the United States. Outlets have a three-prong configuration and are installed in such a way to ensure proper function and safety.
Step-by-step explanation:
Electrical outlets in a standard home are typically placed at a height of about 12 to 18 inches from the floor to the center of the outlet. This height ensures that they are easily accessible when standing or when furniture is placed in front of them. In certain special areas like kitchens or bathrooms, outlets may be placed higher, such as 44 to 54 inches above the floor, according to ADA requirements or local building codes for convenience and safety near countertops and sinks.
Within residences across the United States, electrical outlets are designed to supply a voltage of 110 volts to ensure consistent operation of appliances and devices. The standard three-prong plug configuration of these outlets is designed to maintain proper function of the three-wire system and only allows the plug to be inserted one way to assure proper connection. It should be noted that the actual supplied peak voltage can be higher, but for practical purposes, the figure of 110 volts is recognized for the supply from the outlets.