Electrical plugs are devices used to connect electrical appliances to a power source. They typically consist of metal prongs that fit into corresponding sockets, allowing electricity to flow from the outlet to the appliance. Different countries have various plug designs, which can vary in shape, size, and the number of prongs. The standardization of electrical plugs is important for safety and compatibility. For example, the Type A and Type B plugs are commonly used in the United States, while the Type C plug is popular in many European countries. Understanding these differences helps ensure that devices can be used safely around the world.