Standard Science Primary 5 Systems

In the circuit shown, Bulb B1 and Bulb B2 are connected in parallel. If Bulb B1 fuses, what will happen to Bulb B2?

A Bulb B2 will become dimmer.
B Bulb B2 will become brighter.
C Bulb B2 will go out.
D Bulb B2 will remain lit with the same brightness.
Show Worked Solution

Worked Solution

Step 1: Identify the circuit type (Parallel). Step [2-9]: In a parallel circuit, current flows through multiple independent paths. Step [2-9]: If one branch is broken (B1 fuses), current can still flow through the other branch (B2).

Correct answer: Bulb B2 will remain lit with the same brightness.

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