AC Fundamentals

Provided by: ToolingU

"AC Fundamentals 241" discusses alternating current (AC) as the most common form of electrical power. AC waves can be viewed and measured on the screen of an oscilloscope. Alternating current is economical, can be sent long distances, and can be stepped up or stepped down to adjust voltage. Different AC waveforms exist, the most common being sine waves. Ohm's law holds true for AC circuits, but voltage and current both increase and decrease together in a cycle while impedance remains constant. Anyone working within electrical systems must understand the fundamental concepts and basic workings of alternating current to ensure their safety. After taking this course, students will be able to describe electrical flow in an alternating current circuit and the impact alternating current has on electrical variables.

Course Objectives:

  • Distinguish AC from DC
  • Describe the flow of AC
  • List the advantages and disadvantages of AC
  • Describe how a generator creates AC
  • Describe how oscilloscopes measure AC
  • Identify the different types of AC waveforms
  • Describe sine wave characteristics and terminology
  • Describe different sine wave variable values
  • Explain the sine function
  • Describe RMS
  • Describe the relationship between basic AC circuits and impedance
  • Describe the variables of Ohm's law
  • Distinguish between frequency and period
  • Describe the different types of AC power
  • Describe how to produce true power in AC.

Recommended Background

  • Recommended for mechanical/electrical/plumbing maintenance technicians.

Course ID







Communication, Critical Thinking, Personal Effectiveness, Electricity, AC Electric Power, Power Distribution

Method of Delivery


Estimated Effort

2 hrs



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