Standard Science Primary 5 Systems

Look at the circuit below. If Bulb B1 fuses, which of the other bulbs will remain lit?

A Only B3
B Both B2 and B3
C None of the bulbs
D Only B2
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Worked Solution

Step 1: Identify the arrangement (Series). Step [2-9]: In series, there is only one path for current. Step [2-9]: If B1 fuses, the path is broken (open circuit). All bulbs go out.

Correct answer: None of the bulbs

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