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Published byDarcy Lambert Modified over 2 years ago

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Electric Currents & Circuits AP – Ch 20 & 21

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Intro Stuff Circuit? – Power Supply – Resistance

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Battery? A thing that produces a potential difference through a chemical reaction. – battery, electric, device that converts chemical energy into electrical energy. (How Stuff Works. Com) The act of beating or pounding. – Law. The unlawful and unwanted touching or striking of one person by another, with the intention of bringing about a harmful or offensive contact. (Wiki-Idiot-Pedia.comedy)

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Intro Stuff Electromotive Force – emf Maximum V of battery Current – Flow of charge

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Intro Stuff

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Ohm ’ s Law – States linear relationship between V & R

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Intro Stuff Resistance – Says what it means e - has to ‘ fight ’ thru a wire or ‘ resistor ’

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CONVENTIONAL Current ELECTRON Current

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CONVENTIONAL Current ELECTRON Current

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Intro Stuff Power – Same as regular P, but different

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Intro Stuff Power …

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Intro Stuff Wiring Circuits – Series / Parallel Parallel

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WHY? C //

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WHY? C Series

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Quantitative Summary

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Coulomb’s Law: Force between any 2 charges

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Electric Field Strength: Force on test Q

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Electric Potential Energy: Fd

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Electric Field (av): Potential at a distance

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Electric POTENTIAL: NOT a vector…

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Capacitance: Property of Capacitors

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Capacitance: Property of Capacitors

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Energy stored in Capacitor:

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Definition of Electrical Current: SI Unit - Amps

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Definition of Electrical Current: SI Unit – Amps (A)

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Resistance in a WIRE: SI Unit – Ohms ( )

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OHM’S LAW: All Circuits Must Obey…

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OHM’S LAW: All Circuits Must Obey… 12V 6666

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Electrical Power: From P=W/t

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Series Circuits

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Parallel Circuits

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Circuits w/Capacitors

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EXAMPLE #1 Three 12 resistors are used in two circuits; one in series and one in parallel. What is the R equivalent of each circuit?

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Series 12

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Parallel 12

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Series + Parallel 12 66 18

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