Foundation Science Primary 5 Systems

Alexa is testing different materials to see if they conduct electricity. She replaces a section of wire with a glass rod. What will happen to the bulb?

A It will burst.
B It will become dimmer.
C It will not light up.
D It will become brighter.
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Worked Solution

Step 1: For a bulb to light up, electricity must flow through a complete circuit made of conductors. Step 2: Glass is an electrical insulator, meaning it does not allow electricity to pass through it. Step 3: The circuit is broken, so the bulb will not light up.

Correct answer: It will not light up.

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