Siti set up a circuit with a battery, a bulb, and a gap. She placed four different objects, P, Q, R, and S, one at a time, across the gap. Which object will allow the bulb to light up?
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Worked Solution
Step 1: For the bulb to light up, the material must be an electrical conductor.
Step 2: Iron is a metal, and most metals are conductors.
Step 3: Plastic, glass, and rubber are insulators.
Correct answer: Object R: An iron nail
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