Siti set up the circuit below. When the switch is closed, she noticed that only Bulb B1 and Bulb B2 light up, but Bulb B3 remains unlit. What is the most likely reason?
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Worked Solution
Step 1: Identify that B1 and B2 are lit, meaning electricity is flowing through those parts of the circuit.
Step 2: If the circuit is complete but one specific bulb is dark, that bulb is likely faulty.
Step 3: A fused bulb breaks the path in its own branch.
Correct answer: Bulb B3 is fused.
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