A+ Tutorials The Basics of Electrical EnergyA+ Tutorials - The Basics of Electrical Energy
Lesson 1: Power
Understanding Electricity and Electrical Energy
Ohm's LAW
PCs and Electrical Power
AC Power (Alternating Current)
DC Power (Direct Current)
Measuring Electricity
Testing a Power Supply
Electronic Components
Lesson Summary
Lesson 2: Electrostatic Discharge (ESD)
Causes of Electrostatic Discharge
Preventing ESD
Lesson Summary
Lesson 3: Safety and Electrical Power
Electrical Safety Is Your Responsibility
Lesson Summary
Tutorial Summary
Review
Computers run on electrical energy. Without it, a computer might as well be a paperweight. Because every component of a computer needs power to run (whether plugged into a wall outlet or a battery), a computer professional must understand the basic principles that govern electricity and electrical energy. This tutorial introduces you to these principles.