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ECE CHAPTER 1 - Voltage a measure of the energy gained by a...

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Voltage: a measure of the energy gained by a unit of charge as it moves through the battery - Units: volts (V) or joules per coulombs (J/C) Current: the time rate of flow of electrical charge through a conductor or circuit element - Units: amperes (A) or coulombs per second (C/s) - Electron charge = 1.6 x 10^-19 C Power = Voltage x Current (P=IV) - Units: volts x amperes (V*A) or watts (W) or joules per second (J/s) Energy: integrate power: int (t1 => t2) of p(t) dt KCL (Kirchhoff’s current law) - Node: a point at which two or more circuit elements are joined together - All points in a circuit that are connected by ideal conductors are a single node - KCL: - The net current entering a node is zero - The net current leaving a node is zero. - The sum of the currents entering a node equals the sum of the currents leaving the node - Electrical forces prevent charge from accumulating at the nodes of a circuit Series: elements are connected end to end - All currents are the same KVL (Kirchhoff’s voltage law)
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