Standard Science Primary 6 Energy

If Bulb B2 in the diagram below fuses, which other bulbs will stop working?

A No other bulbs
B Bulb B1 only
C All bulbs
D Bulb B3 only
Show Worked Solution

Worked Solution

Step 1: Identify series and parallel components. Step 2: B1 and B2 are in series with each other. Step 3: If B2 fuses, the path for that branch is broken, so B1 stops. Step 4: B3 is in a separate parallel path and continues to work.

Correct answer: Bulb B1 only

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