EE40_Fall08_Lecture2-new

# EE40_Fall08_Lecture2-new - EE40 Lecture 2 Connie...

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Slide 1 EE40 Fall 08 Chang-Hasnain EE40 Lecture 2 Connie Chang-Hasnain 8/29/08 Reading: Chap. 1 Voltage, current, IV plot Circuit elements Power Active and passive sign convention Resistor

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Slide 2 EE40 Fall 08 Chang-Hasnain Electric Current • Time rate of the flow of positive electric charge through a conductor or circuit element • Unit: Ampere (=coul/sec) • Use water flow as a model • Charge is conserved within a given circuit element • Current flow is the same for all cross sections of a circuit element • DC: direct current • AC: alternate current
Slide 3 EE40 Fall 08 Chang-Hasnain Voltage • Energy transferred per unit charge that flows through an element • Think of it like potential energy • Unit V (=Joul/Coul) • Measured across ends of a circuit element • Energy is conserved through a loop • Voltage is assigned polarity that indicates the direction of energy flow • Charge move from + to -; whereby charge gains energy

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Slide 4 EE40 Fall 08 Chang-Hasnain The Ideal Basic Circuit Element Attributes
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## This note was uploaded on 10/24/2009 for the course EE 40 taught by Professor Chang-hasnain during the Fall '07 term at Berkeley.

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EE40_Fall08_Lecture2-new - EE40 Lecture 2 Connie...

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