Standard Science Primary 5 Systems

Siti set up the circuit shown below. When she closed the switch, she noticed that only two bulbs remained lit while one was fused. Which bulb was fused?

A None of the above
B Bulb B
C Bulb A
D Bulb C
Show Worked Solution

Worked Solution

Step 1: Analyze the circuit arrangement (Series vs Parallel). Step 2: If a bulb in series fuses, the whole circuit fails. Step 3: If a bulb in a parallel branch fuses, only that branch is affected. Step 4: Identification of the specific branch based on the visual setup.

Correct answer: Bulb C

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