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Intro to Electricity

Introduction to Electricity Symbol: (q) Unit:Coulomb (C) The fundamental electric quantity is charge. Atoms are composed of charge carrying particles: electronsand protons, and neutral particles, neutrons. The smallest amount of charge that exists is carried by an electron and a proton. Charge in an electron:qe= C Charge in a proton:qp= CChargeCurrent Current moves through a circuit element through variable. Current is rate of flow of negatively-charged particles, called electrons, through a predetermined cross-sectional area in a conductor.

Capacitor Concept •A capacitor is an energy storage element which is analogous to the spring element of mechanical systems. •It can store electrical pressure (voltage) for periods of time.-When a capacitor has a difference in voltage (electrical pressure) across its plate, it …

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