Standard Science Primary 5 Systems

Study Circuit X carefully. Bulb B1 is fused. What will happen to Bulb B2?

A Bulb B2 will flicker.
B Bulb B2 will light up normally.
C Bulb B2 will not light up.
D Bulb B2 will become brighter.
Show Worked Solution

Worked Solution

Step 1: Identify the circuit arrangement. The components are in a series circuit. Step 2: In a series circuit, there is only one pathway for the electric current to flow. Step 3: Since Bulb B1 is fused, the filament is broken, creating an open circuit. No current can flow through to Bulb B2.

Correct answer: Bulb B2 will not light up.

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