Standard Science Primary 6 Energy

In which arrangement will a bulb be the brightest?

A Two batteries facing opposite directions in series
B One battery only
C Two batteries in parallel
D Two batteries in series
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Worked Solution

Step 1: Brightness depends on the amount of electrical energy (voltage). Step 2: Batteries in series add their voltage together. Step 3: Higher voltage results in a brighter bulb.

Correct answer: Two batteries in series

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