Standard Science Primary 5 Systems

In the circuit diagram shown, Bulb B2 and Bulb B3 are connected in parallel. What will happen to Bulb B1 if Bulb B2 is removed from its holder?

A Bulb B1 will go out.
B Bulb B1 will become brighter.
C Bulb B1 will remain lit with the same brightness.
D Bulb B1 will become dimmer.
Show Worked Solution

Worked Solution

Step 1: Analyze the circuit. B1 is in series with a parallel branch containing B2 and B3. Step 2: If B2 is removed, current can still flow through B3. Step 3: The circuit remains closed, and B1 stays lit.

Correct answer: Bulb B1 will remain lit with the same brightness.

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