Standard Science Primary 6 Energy

Jun Jie replaced a part of his circuit with an object made of a certain material. The bulb did NOT light up. What could the object be?

A An iron nail
B A plastic ruler
C An aluminum foil
D A copper wire
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Worked Solution

Step 1: If the bulb does not light up, the material must be an electrical insulator. Step 2: Metals (iron, copper, aluminum) are conductors. Step 3: Plastic is an insulator.

Correct answer: A plastic ruler

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