ECE 0031 Study Guide - Quiz Guide: Resistor, Current Source, Voltage Source
3 Sep 2016
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Ohm"s law expressed as with r in ohms [ ], or with g (conductance) in siemens [s]. The choice of r and g is based on convenience. Usually r for hand calculations, g for computer. Linear resistor (focus in this course) r and g are constant. Non-linear resistor (e. g. surge suppressor), r(v) and g(v) See the back flyleaf of your textbook for some examples. Starting from find expressions for p as a function of voltage or current only: p(i) = p(v) = i v. The current through a 33-k resistor is 1. 2 ma. A resistor with 15 v across it dissipates 25 mw. Short circuit, : what is the current through a short circuit? v, what is the voltage across a short circuit? i. These are controllable boundary cases of the resistor: Open switch, open circuit, (or a large value in spice). Closed switch, short circuit, (or a small value in spice). v i.
