A pictorial diagram shows real images or simple drawings of components. For a setup with 1 bulb and 1 switch, here's a basic idea:Power Source (Battery or Plug)Switch (Single Pole Single Throw)Bulb (Light source)Wires connecting: 1. Power → Switch 2. Switch → Bulb 3. Bulb → back to Power (to complete the circuit)When the switch is ON, the circuit is complete, and the bulb lights up.