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Technical and scientific discussion of amps, cables and other topics.

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Current is a calculated quantity. It's calculated based on the number of electrons in a given cross section of the conductor and the average drift velocity. I.e., moving charges. Current is also a *scalar quantity* - it has no direction. It doesn't move. The only thing moving are free electrons. Some electrons don't move in a straight line. That's why thicker conductors can carry more current as they say. So, actually current is dependent on the electrons not the other way around. Does that surprise you?


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