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In all track circuits an electrical signal of some kind is impressed between the running rails, and the presence of a train is detected by the electrical connection that the wheels and axles of the train make between the two running rails. How are trains detected and separated? A sourceRead More →

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A simple electric circuit can consist of a battery (or other energy source), a light bulb (or other device that uses energy), and conducting wires that connect the two terminals of the battery to the two ends of the light bulb. How are electronic circuits used in everyday life? EverythingRead More →