Standard Science Primary 6 Energy

Siti set up two circuits, A and B. Circuit A has two bulbs in series, while Circuit B has two bulbs in parallel. Both use identical batteries and bulbs. Which statement is correct?

A The bulbs in Circuit B will not light up.
B The bulbs in Circuit A are brighter than in Circuit B.
C The bulbs in both circuits have the same brightness.
D The bulbs in Circuit B are brighter than in Circuit A.
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Worked Solution

Step 1: Identify circuit types (Series vs Parallel). Step 2: In series, the energy is shared between bulbs. In parallel, each branch receives the full voltage. Step 3: Therefore, bulbs in parallel are brighter.

Correct answer: The bulbs in Circuit B are brighter than in Circuit A.

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