Multiple choice In which circuit will the bulb or bulbs glow brightest? A simple circuit with one bulb and one battery. A simple circuit with 2 batteries and 2 bulbs. A simple circuit with 2 batteries and 1 bulb. A simple circuit with three bulbs and 1 battery. Reveal answer Fill a bubble to check yourself C Correct answer Explanation Brightness is maximized when the voltage per bulb is highest. Two batteries powering a single bulb provide more voltage to that bulb than the other configurations listed.