Standard Science Primary 6 Energy

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?

A P and R are electrical conductors.
B P, Q, R and S are all electrical insulators.
C Q and S are electrical conductors.
D Q and S are electrical insulators.
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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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