Which circuit arrangement will result in the brightest bulbs? (Assume all batteries and bulbs are identical)
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Worked Solution
Step 1: Brightness depends on the amount of electrical energy each bulb receives.
Step 2: More batteries = more total energy. Fewer bulbs in series = less sharing of that energy.
Step 3: 2 batteries providing energy to just 1 bulb gives that single bulb the maximum possible current, making it the brightest.
Correct answer: 2 batteries connected to 1 bulb.
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