Standard Science Primary 5 Systems

Siti set up a circuit with a battery, a bulb, and a gap. She placed different objects across the gap. Which object will cause the bulb to light up?

A A wooden popsicle stick
B A plastic ruler
C A glass rod
D An iron nail
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Worked Solution

Step 1: For the bulb to light up, the circuit must be closed. Step 2: This requires a material that is an electrical conductor. Step 3: Metals like iron are conductors, while plastic, glass, and wood are insulators. Step 4: Therefore, the iron nail is the correct choice.

Correct answer: An iron nail

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