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In a parallel circuit, each component receives the same voltage, but if the bulbs are not compatible with the battery's voltage or if they are faulty, they may not light up. Additionally, if there is a short circuit or if the connections are improper, it can prevent the flow of current, resulting in no lights lighting up. Lastly, if the battery is depleted or has insufficient current capacity, it may not provide enough power for the bulbs to function.

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2w ago

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