Standard Science Primary 6 Energy

Siti has two identical circuits, A and B. Circuit A has two bulbs in series. Circuit B has two bulbs in parallel. Which of the following is true about the bulbs?

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

Worked Solution

Step 1: In a series circuit, current flows through one path; voltage is shared. Step 2: In a parallel circuit, each bulb has its own path to the battery. Step 3: Bulbs in parallel receive more voltage and are brighter. Step 4: Final Answer: Circuit B bulbs are brighter.

Correct answer: The bulbs in Circuit B are brighter.

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