RESISTANCE
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• When a voltage source is connected to a circuit, the voltage will cause a uniform flow of electrons through that circuit called a current.
• In a single (one loop) circuit, the amount of current at any point is the same as the amount of current at any other point.
• If a circuit containing a voltage source is broken, the full voltage of that source will appear across the points of the break.
• The +/- orientation of a voltage drop is called the polarity. It is also relative between two points.