Are Christmas Lights in Series or Parallel? | WIRED Dec 15, 2014If you take away any one of the parts for the complete circuit, there would be no current and no glowing bulb. Light Bulbs in Series Now you want to connect two light bulbs to battery. Series circuits - Electric current and potential If you follow the circuit diagram from one side of the cell to the other, you should pass through all the different components, one after the other, without any branches. Two lamps in series. Related searches for circuit diagram two bulbs circuit diagram bulblight bulb diagram circuitdiagram of a light bulbelectric light bulb diagramled bulb diagramhair bulb diagram