Siti set up a circuit with a battery, a bulb, and a gap. She placed four different materials, P, Q, R, and S, across the gap one at a time. The bulb only lit up for materials Q and S. Which of the following is likely true?
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Worked Solution
Step 1: A bulb lights up only when the circuit is closed.
Step 2: Electrical conductors allow electricity to flow through them to close the gap.
Step 3: Since the bulb lit up for Q and S, they are conductors.
Correct answer: Q and S are electrical conductors.
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