Standard Science Primary 5 Systems

Three identical bulbs are connected in series. If one more battery is added in series to the circuit, what will happen to the bulbs?

A They will all fuse immediately.
B They will become brighter.
C They will become dimmer.
D They will remain the same.
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Worked Solution

Step 1: Adding a battery in series increases the total electric source. Step 2: More current flows through the circuit. Step 3: This causes the bulbs to light up with greater intensity.

Correct answer: They will become brighter.

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