Esad Phymica Investigation 17D: Series and parallel resistances Esential question What are the data and disadvantage of server Have you ever had a string of holiday lights where one bulb is burned out, preventing all the other bulbs from lighting? Was it easy to find the burned out bul? This investigation explores series and nel circuits eine th e y are the circus will learn why the wiring of some strings of lights allows one bad bulbs to disconnect all the other bulbs. Part. Connecting in series 1. Create a circuit using two batteries, one bulb, a switch, and any necessary wire modules 2. Close the switch and observe the brightness of the bulb 3. Create a circuit with two bulbs in series, as shown in the circuit diagram Compare the brightness of the two lamps to the previous circuit with one lamp Questions a. What property makes this a series circuit? b. How bright are the two bulbs in series compared to a single bulb circuit? Why? c. Unscrew one bulb from the series circuit. What happens to the other bulb? Why?