lec3 - ENGR 111 Lecture 3 Reading: Chapters 19, Class notes...

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ENGR 111 Lecture 3 Reading: Chapters 19, Class notes
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Lecture 3: DC Fundamentals z Electrical Charge (q): more or fewer electrons { In an atom, # of electrons = # of protons { When they differ, electrical charge is present { Each electron/proton carries a unit charge z Electron negative, Proton positive { More electrons than protons, negatively charged { More protons than electrons, positively charged
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Electrical Charge z Unit of Charge: 1 coulomb (1C) { Equal to charge of 6.24x10^18 elementary charges z An electrical (or electrostatic) field surrounds a charge { The field strength proportional to charge { The field strength inversely proportional to square of distance from the charge
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Electrical Charge z Charges of opposite polarity attract z Charges of similar polarity repel z Electrical charge can be created through chemical processes { Batteries
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Electrical fundamentals z Voltage is the potential difference of charge at two points in an electrical field z Voltage symbol V, unit Volts z Voltage results in the flow of charge between two points
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This note was uploaded on 03/26/2008 for the course ENGR 111 taught by Professor Walker during the Fall '07 term at Texas A&M.

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lec3 - ENGR 111 Lecture 3 Reading: Chapters 19, Class notes...

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