Schematic Diagram Circuits Example: A circuit containing 3 lightbulbs, Example: all connected in series connection 三三 1. A circuit containing 4 lightbulbs, all connected in parallel connection 2. A circuit containing 4 lightbulbs, all connected in such a way that all will turn off when any of the 4 got broken 3. A circuit containing 5 lightbulbs, all connected in such a way that when any of the 5 got broken, the remaining bulbs will still light up