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Transcript
SNC1D Electricity Unit Review Part A: Static Electricity The Law of Electrostatics Definition of Static Electricity Ways to create static electricity – friction, conduction and induction Friction – be able to use the electrostatic series to determine whether two objects rubbed together would have a positive or negative charge Conduction – be able to draw before, during and after contact diagrams. Know which way electrons would move when two objects are touched together and the charges created (electrons always move from the more negative to the lesser negative object and aim to create two objects with the same charge) Induction – be able to draw what objects would look like when there is a shift in electron arrangement and that this shift is temporary Electric Discharge – what is it, when does it occur? Grounding – what is it, how is it done/what results? Useful Applications of Static Electricity Part B: Current Electricity Definition of current electricity – how is it different from static? Electric circuits – what are they? Why do we need circuits? What 4 components are parts of an electric circuit? Which one is optional? Know the function of each part of the circuit. Know the difference between an open and a closed circuit Two types of circuits – series and parallel – know the major differences between the two – effect of adding lights, removing a light from the socket, the use of switches, what kind of devices they are used in Schematic or Circuit diagrams – know how to draw diagrams for both series and parallel circuits Current – definition, symbol, units measure it in and its symbol, how to measure it and connect it into a circuit Potential Difference or Voltage - definition, symbol, units measure it in and its symbol, how to measure it and connect it into a circuit Resistance - definition, symbol, units measure it in and its symbol, how to measure it and connect it into a circuit Ohm’s Law – know what it states and how to calculate V,I or R in a given problem – use GRASS (given, required, analysis, solve and sentence) for each problem Current and Voltage in Series and Parallel Circuits – how they differ – know the two equations needed to calculate voltage in a series circuit and current in a parallel circuit Electrical Efficiency – calculation to determine efficiency, what does efficiency mean, calculate cost Different methods of creating electrical energy