EE 200 Lecture Notes - Lecture 1: Voltage Source, Current Source, Electron Density
2 Feb 2017
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Charge : the fundamental electric quantity. qe= 1. 602x10^19 c. Current electric charge past a cross-sectional area per unit time i = change of q over change of time. Voltage ( potential difference)-energy required to move a unit of charge. Ground = a point of reference when vground = 0v. Change carrier velocity (electron velocity u = 19. 9 x 10^-6 m/s. Charge of the conductor q = n x charge / electron. Current i = q/l x u= charge / length of conductor x velocity of charge. 1 volt = 1 j / coulomb c. Networks branch ; any portion of the circuit with 2 terminals. Nodes: the junction of 2 or more branches. Mesh: any loop that does not contain any other loops. Sume of n k=1 n =4 c k^ n = c1^4 + c2^4 + c3^ 4 + c4^4 source : elements that deliver energy. Loads: elements that dissipate energy passive sign convention.
