Course Overview

  • 1.5 Hours

  • All Levels

  • All Devices

  • 12 Months Access

Watch Intro Video

What will you learn in this course?


Welcome to Ohm’s Law Made Easy for Series Circuits. By the end of this course, students will be comfortable with Ohm’s Law, the Series Circuit Rules and Math Calculations for Automotive Electrical Series Circuits. 

Ohm’s Law expresses the relationship between Voltage, Current and Resistance in an Electrical or Electronic Circuit.  By knowing any two values, voltage and current, voltage and resistance, or current and resistance, the third value can be calculated mathematically.  Understanding the Math behind these relationships can help you in your diagnostic thought process.

Series Circuits are used when lower than source or battery voltage is desired, or when you want components to share the source voltage.  Parallel Circuits are used when we want each device to receive the full source voltage.  In Automotive circuits, most are parallel because more often than not, it is desired that each component receives full battery or source voltage. 

This course is Geared toward Automotive students, Beginning Electronics Students and Do it Yourselfers that desire a Solid Foundation and Understanding of Series Circuits and Ohm’s Law. This course does more than just show you a formula and tell you about a concept, it walks you through the thought process, the steps, and the reasoning behind them.

This course provides practice examples and detailed explanations of how the answers were calculated and determined.

Understanding Ohm's Law Math can help students recognize incorrect voltage measurements and become better at troubleshooting and Electrical diagnostics.  

Let's get started!


Register to access free preview lessons.

  • 1
    Ohm's Law Made Easy for DC Series Circuits Introductions to Ohm's Law
  • 2
    Series Circuit Rules
    • Series Circuit Rules
    • Series Rule 1 - Current Remains Constant
    • Series Rule 2 - The Total Resistance is the Sum of All Resistance in the Circuit
    • Series Rule 3 - Sum of Voltage Drops Equals Source Voltage
    • Series Rule 4 - Voltages Differ if the Resistors are Different Values
  • 3
    Series Circuit Math Practice
    • Series Circuit Example 1
    • Understanding Voltage Current and Resistance Better
    • Series Circuit Example 2
    • The Power Formula
    • Series Example 2 with Power
    • Series Circuit Math Example 3
    • Series Circuit Math Example 4
    • Series Circuit Math Example 5
    • Series Circuit Math Example 6
    • Series Circuit Math Example 7
  • 4
    Live Demos
    • Live Demo - Two - 50 Ohm Resistors in Series
    • Live Demo - 10 and 50 Ohm Resistors in Series
    • Live Demo - Bulbs in Series
  • 5
    Electrical Prefixes and Thank You
    • Electrical Prefixes
  • 6
    • Lesson 4 Resource - Ohms Law Math Practice with Formulas
    • Lesson 4 Resource - Ohms Law Math Practice
    • Lesson 5 Resource - Ohms Law Practice Examples - Answers
    • Lesson 7 Resource - Series Circuit Rules
    • Lesson 12 Resource - Series Example 1 with Boxes Setup
    • Lesson 12 Resource - Series Example 1
    • Lesson 14 Resource - Series Example 2 with Boxes Setup
    • Lesson 14 Resource - Series Math Example 2
    • Lesson 17 Resource - Series Math Example 3
    • Lesson 18 Resource - Series Math Example 4
    • Lesson 19 Resource - Series Math Example 5
    • Lesson 20 Resource - Series Math Example 6
    • Lesson 21 Resource - Series Math Example 7
    • Lesson 25 Resource - Electrical Prefixes