An\xa0electric switch\xa0is a device that interrupts the electron flow in a circuit.\xa0Switches\xa0are primarily binary devices: either fully on or off and light\xa0switches\xa0have a simple design. When the\xa0switch\xa0is turned off, the circuit breaks and the power flow is interrupted. Circuits consist of a source of power and load.\xa0The power supply to a circuit is switched by the SPST\xa0switch. From the typical light\xa0switch diagram, it controls one wire (pole) and it makes one connection (throw). This is an on/off\xa0switch\xa0when the\xa0switch\xa0is closed or on then current flows through the terminals and the bulb in the circuit will glow.