Standard Science Primary 6 Energy

Siti set up a circuit with two identical bulbs and two identical batteries. She noticed that the bulbs in Setup B were brighter than the bulbs in Setup A. Which of the following explains this?

A The bulbs in Setup B are arranged in parallel.
B Setup A has more batteries than Setup B.
C The bulbs in Setup B are arranged in series.
D Setup B has a broken switch.
Show Worked Solution

Worked Solution

Step 1: In a parallel circuit, each bulb receives the full voltage of the batteries. Step 2: In a series circuit, the voltage is shared between bulbs. Step 3: Therefore, bulbs in parallel are brighter than bulbs in series with the same power source.

Correct answer: The bulbs in Setup B are arranged in parallel.

Want more questions like this? Superholic Lab has 10,000+ MOE-aligned questions with full worked solutions.

Start Free Trial — 7 Days Free