Lesson 7: Ohm's Law and the Power Triangle



In this lesson students will learn how to use Ohm's Law to understand wire length, gauge, and type. Students will also learn the basic power equation to determine wattage from volts and amps.

Lesson Time

Class Period
57 Minutes

Industries / Subjects / Grades

Industries / Pathways
  • Engineering & Architecture Engineering & Architecture

Standards and Objectives


California Academic Content Standards (3)

Related Instructional Objectives (SWBAT...)

  • Students will be able to identify correct wire gauge for the length and type of wire they are using in a circuit
  • Students will learn Ohm's Law
  • Students will learn how to utilize the Ohm's Law Triangle and Pie Chart
  • Students will learn how to draw and utilize the power equation triangle for finding voltage, amperage, or wattage
  • Students will compile test results and manipulate data to find power used by a specific load in a circuit

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