Standard Science Primary 5 Systems

Ravi tested four materials in a circuit. The bulb lit up when Materials P and R were used, but not with Q and S. Which material is most likely an insulator?

A Material Q
B Material R
C Material P
D Copper
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Worked Solution

Step 1: Conductors allow electricity to flow (bulb lights up). Step 2: Insulators block electricity (bulb stays off). Step 3: Materials Q and S did not light the bulb. Step 4: Therefore, Q is an insulator.

Correct answer: Material Q

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