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Describing Motion Verbally with Speed and Velocity
Describing Motion Verbally with Speed and Velocity

... The Staircase Analogy Electric charge dividing into multiple pathways in a parallel circuit is analogous to people walking down stairs which divide up into separate paths. Imagine being at a large shopping mall; you are descending a rather wide stairway when all of a sudden it breaks up into several ...
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... Two terminals where the current into one is identical to the current out of the other. Circuit A current from one terminal of a generator, through load component(s) and back into the other terminal. A circuit is, in this sense, a one-port network and is a trivial case to analyze. If there is any con ...
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Electrical ballast



An electrical ballast is a device intended to limit the amount of current in an electric circuit. A familiar and widely used example is the inductive ballast used in fluorescent lamps, to limit the current through the tube, which would otherwise rise to destructive levels due to the tube's negative resistance characteristic.Ballasts vary in design complexity. They can be as simple as a series resistor or inductor, capacitors, or a combination thereof or as complex as electronic ballasts used with fluorescent lamps and high-intensity discharge lamps.
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