Standard Science Primary 5 Systems

Ravi set up a circuit with three bulbs in series. If the middle bulb fuses, what will happen to the other two bulbs?

A They will become dimmer.
B They will remain the same brightness.
C They will not light up.
D They will become brighter.
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Worked Solution

Step 1: In a series circuit, there is only one path for the electric current to flow. Step 2: A fused bulb has a broken filament. Step 3: This creates an open circuit, stopping the flow of current. Step 4: Therefore, all bulbs in the series will not light up.

Correct answer: They will not light up.

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