Standard Science Primary 5 Systems

Study the circuit. Which material, when placed at position P, will allow the bulb to light up the brightest?

A Wooden chopstick
B Copper wire
C Plastic ruler
D Glass rod
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Worked Solution

Step 1: To light the bulb, the material at P must be an electrical conductor. Step 2: Metals are excellent conductors of electricity. Step 3: Copper is a metal, while the other options are insulators.

Correct answer: Copper wire

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