Standard Science Primary 5 Systems

Four materials were placed one by one into the gap of an electrical circuit. Based on the table, which material is an electrical insulator?

A Material X
B Material Z
C Material Y
D Material W
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Worked Solution

Step 1: An electrical insulator does not allow electric current to pass through it. Step 2: If an insulator is placed in the gap, the circuit remains open and the bulb will not light up. Step 3: According to the table, Material Y resulted in the bulb not lighting up.

Correct answer: Material Y

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