Standard Science Primary 5 Systems

Stan needs to bridge the gap in the circuit below to light the bulb. Which object will allow the bulb to light up?

A A plastic comb
B A rubber eraser
C An aluminium foil strip
D A glass marble
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Worked Solution

Step 1: To light the bulb, the circuit must be closed. Step 2: The object used to bridge the gap must be an electrical conductor. Step 3: Metals are good electrical conductors. Aluminium foil is a metal.

Correct answer: An aluminium foil strip

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