Multiple choice

In which circuit will the bulb or bulbs glow brightest?

  1. A simple circuit with one bulb and one battery.

  2. A simple circuit with 2 batteries and 2 bulbs.

  3. A simple circuit with 2 batteries and 1 bulb.

  4. 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.