Transcription of Intro to Electricity
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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. Like water flow. Essentially, flow of electrons in an electric circuit leads to the establishment of (t) =oq : relatively charged electrons (C)oAmp = C/secoOften measured in milliamps, mAdqdt Symbol: I Unit:AmpereCurrent-Water AnalogyVoltage Potential difference across two terminals in a circuit across variable.
Current –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. –Like water flow. – Essentially, flow of electrons in an electric circuit leads to the establishment of current.
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