PHYS 102 Lecture 9: Kirchhoff current and voltage laws
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24 Feb 2019
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Circuit with a voltage source let"s just say this is this of 10 volts and a resistor connected to it of. If i go through the voltage source(battery), the node is going to be at 10 volts, the voltage goes up as we go through the voltage source and that"s called a voltage rise. If we went from a node down to another node (after a resistor) like that the voltage would go from 10 volts down to zero volts in this circuit and that"s called a voltage drop. This voltage rise is 10 volts and the voltage drop are 10 volts: The drop is 10 volts or the rise on this side is - 10 volts (these 2 expressions mean exactly the same thing). It meant that the voltage went from 10 volts to 0 volts sort of going through the. Vrise vdrop = 0 (a form of kirchhoff"s voltage law)
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