Advanced Science Primary 5 Systems

Which circuit arrangement would result in the brightest bulbs if all components are identical?

A Two batteries in parallel with two bulbs in series.
B Two batteries in series with two bulbs in series.
C Two batteries in series with two bulbs in parallel.
D One battery with two bulbs in parallel.
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Worked Solution

Step 1: Batteries in series increase voltage (more brightness). Step [2-9]: Bulbs in parallel each receive the full circuit voltage. Step [2-9]: This combination maximizes current through each bulb.

Correct answer: Two batteries in series with two bulbs in parallel.

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