Standard Science Primary 5 Systems

Study the circuit diagram below. If Bulb B1 fuses, what will happen to Bulb B2?

A Bulb B2 will stay lit.
B Bulb B2 will go out.
C Bulb B2 will become brighter.
D Bulb B2 will flicker.
Show Worked Solution

Worked Solution

Step 1: Identify the circuit type (Series). Step [2-9]: In a series circuit, there is only one path for current. Step [2-9]: A fused bulb creates a gap, so current cannot reach B2.

Correct answer: Bulb B2 will go out.

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