👉 A scientist prepared a simple circuit with LED, battery, and wires; within moments, she lit up her invention with a flick of switch. She quickly adjusted connections, then presented her creation to the audience, leaving them amazed and impressed.
👉 A scientist prepared a simple circuit with LED, battery, and wires; within moments, she lit up her invention with a flick of switch. She quickly adjusted connections, then presented her creation to the audience, leaving them amazed and impressed.
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