Standard Science Primary 5 Systems

An object was placed at position X in a circuit. The bulb did not light up. Which material could the object be made of?

A Rubber
B Iron
C Copper
D Graphite
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Worked Solution

Step 1: If the bulb does not light up, the object is an electrical insulator. Step 2: Rubber is an insulator and does not allow electricity to pass through. Step 3: Copper, Iron, and Graphite are all conductors.

Correct answer: Rubber

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