Rey set up a circuit to test if different materials can conduct electricity. He placed material X in the gap of the circuit and the bulb lit up. Which of the following could material X be?
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Worked Solution
Step 1: The bulb lit up, which means electric current flowed through the circuit.
Step 2: Therefore, material X must be an electrical conductor.
Step 3: Metals like steel are electrical conductors, while plastic, glass, and wood are insulators.
Correct answer: A steel paper clip
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