Ravi wants to test if different materials are conductors of electricity. He places a material in a gap in a closed circuit. The bulb lights up. Which material could he have used?
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Worked Solution
Step 1: For the bulb to light up, the material must be an electrical conductor.
Step [2-9]: Metals are generally good conductors of electricity.
Step [2-9]: An iron nail is a metal conductor.
Correct answer: Iron nail
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