# Slide Preview for Physics 3 - Electric Circuits

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## Powerpoint Description:

This slideshow covers this content from the 2016 21st Century syllabus: how static electricity is generated, what an electric field is, how distance affects the strength of an electric field, electric fields around charges, the definition of electric current, circuit symbols, basic ideas about current, voltage and resistance, how charge is calculated, Ohm's Law and how to calculate resistance, factors that affect resistance, current-voltage graphs for resistors, bulbs and diodes, electrical work done, current and voltage in series and parallel circuits, resistors in series and parallel, equivalent resistance, using LDRs and thermistors, energy and power, calculating power, the National Grid, power conservation in transformers, magnetic field around a bar magnet, magnets attracting and repelling, the Earth's magnetic field, plotting a magnetic field using a compass, permanent and induced magnetism, magnetic field around a current-carrying wire, making electromagnets, factors that make a solenoid a stronger electromagnet, how loudspeakers work, the motor effect, Fleming's Left Hand Rule, F=BIL, using motors in everyday life, how motors work, electromagnetic induction, factors that affect the strength of an induced voltage, how microphones work, magnetism opposing its induction (Lenz's Law), AC generators, how AC generators and DC dynamos compare, how transformers work, the transformer equation.Click here to register and to download this PowerPoint file

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