Performance Objectives – What Is Electricity? – Elements and Atoms – Free Electrons – Current Flow – Energy – Electrical Materials – Conductors – Insulators – Semiconductors – Generating Electricity – Voltage and Current – Resistance – Wire Size – Copper versus Aluminum Wire – Circuits – Ohm’s Law – Using Ohm’s Law – Power – Kilowatts – Measuring Electricity – Meters – Other Types of Meters – Controlling Electricity – Switches – Solenoids – Relays – Diodes – Resistors – Resistor Color Code – Review Questions – Tools and Equipment – Performance Objectives – Hand Tools – Screwdrivers – Pliers – Hammers – Hacksaws – Wrenches – Nut Drivers .
