The Control of Electricity in Circuits

Electricity vs. Static Electricity 1a) What’s the difference between current electricity and static electricity? Current electricity is the flow of electrons in a circuit through a conductor Static electricity is the electric charge that builds up on the surface of an object. Static electricity discharges when it is given a path, but it does not continue to flow

AC vs DC 1b) What do AC and DC stand for and what’s the difference between them? Alternating current (AC) flows back and forth at regular intervals called cycles. Direct current (DC) only flows in one direction

Current Electricity 2. a) Define Current electricity ? Current electricity is the continuous flow of electrons in a circuit 2 conditions must be met for electrons to flow continuously: (1) The flow of electrons requires an energy source (2) The electrons will not flow unless they have a complete path to follow What is an electrical circuit An electric circuit includes an energy source, a conductor and a load

Electric Circuits See figure 11.4 on p.434

Electric Circuits 4a) electrical load 4b) switch converts the electrical energy to another form of energy 4b) switch A device that turns the circuit on/off by closing or opening the circuit When the switch is closed the circuit is complete and electrons (-) can flow An open switch means there is a break in the path so the electrons cannot flow through the circuit The circuit is turned OFF when the switch is open.

Circuit Diagrams 5a) What is a circuit diagram? Diagram with special symbols that show the components and connections in a circuit 5b) Why are they useful? Makes it easier to plan and analyze a circuit before you build it. 5c) List the 2 rules to follow when drawing circuit diagrams: Always use a ruler to draw straight lines for the conducting wires Makes right angle corners so that your finished diagram is a rectangle

Series and Parallel Circuits 7a) What is a series circuit? A series circuit has components that are arranged one after another in series. 7b) How many paths does a series circuit have to allow the flow of electrons? one 8a) What is a parallel circuit? A parallel circuit has parts that are arranged so that the electrons can flow along more than one path

Electrical Safety List, define and explain how 3 common safety devices work.

Electrical Safety List, define and explain how 3 common safety devices work.

Electrical Safety List, define and explain how 3 common safety devices work.

Electrical Safety List, define and explain how 3 common safety devices work.