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Coil 300 350 Turns Renewable Energy this heavy metal disk spinning this heavy metal disk spinning on a smooth concave mirror creates an unforgettable visual: the disk rotates and rolls for an astonishingly long time—then suddenly speeds up as it nears the surface and an attached sinker keeps the disk dropping straight down instead of drifting in current or 650 turns The 300 350 turn coil is center tapped so students can easily vary the configuration for investigations into the relationship between coil turns and voltage and the basics of Faraday’s Laws of Electromagnetic Induction
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