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Quick Quick electrical current concept question
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[QUOTE="gneill, post: 3933337, member: 293536"] Two essential types of sources you'll run into are voltage sources and current sources. In its ideal form a voltage source will produce a fixed voltage no matter what, and will generate ANY amount of current required to maintain that fixed voltage no matter what the source is connected to. An ideal current source, on the other hand, maintains a fixed current flow no matter what, and will generate ANY amount of voltage required to maintain that fixed current flow no matter what the source is connected to. A typical real-life voltage supply will be rated for a given fixed voltage which it can maintain up to some [I]maximum[/I] current that it is capable of producing. It sounds like the source you described is of this variety (12V at a maximum of 500A). Use Ohm's law to determine the actual current it must produce for that fixed voltage when it's connected to a given resistor load. [/QUOTE]
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