Siti set up a circuit with a battery, a bulb, and a gap. She placed four different materials across the gap one at a time. Which material 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: Metals are generally good conductors of electricity.
Step 3: An iron nail is made of metal.
Step 4: Plastic, glass, and rubber are insulators.
Correct answer: Iron nail
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