Sockets allow communication between two different processes on the same or different machines. An electrical socket is a device that allows electrical equipment to be connected to the primary power supply. The sockets may differ in voltage and current rating, shape, size and type of connectors. We use switches to switch electrical products like lights, fans , geysers, kitchen appliances , Audio video equipment , washing appliances, etc. We use sockets to connect electrical equipment and draw power from them.