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In a magnet-powered flashlight, a diode acts as a one-way valve for electrical current. It allows current generated by the magnet passing through a coil to flow in only one direction, ensuring that the flashlight's LED light only illuminates when the magnet moves and generates electricity. This helps to convert the kinetic energy from the movement of the magnet into usable electrical energy for the flashlight.

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When a flashlight is on what does it convert to?

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