Current, Voltage, and Resistance

The Ohm's Law Equation Video Tutorial explains the relationship between current, electric potential difference (voltage), and resistance. Numerous mathematical and conceptual examples are given. The video ends with a summary of the many formulas used to analyze electric circuits.

The video lesson answers the following questions:

How are current, resistance, and voltage mathematically related?
How can the relationship be used?

Video

You can watch the video below, or click here to watch on YouTube (opens in a new tab).

To improve the effectiveness of the learning experience, The Physics Classroom has provided the following tools:

Additional and Related Learning Tools

Minds On Physics: Electric Circuits Module - Mission EC4 - Resistance, Voltage, and Current
Make sure you have the concept understood with this MOP Mission. Rely on the Question-specific help (textbook icon) as needed. Take your time. Read carefully. Think critically.

Minds On Physics: Electric Circuits Module - Mission EC5 - Voltage, Resistance, and Current Calculations
Make sure you can use the equation to analyze a circuit and solve for an unknown. This is great practice that syncs nicely with the video.

Concept Builders: Electric Circuits - I=∆V/R Equations as a Guide to Thinking
This Concept Builder will provide you a great exercise with proportional reasoning. You will get immediate feedback and opportunities for correction.

Calculator Pad: Electric Circuits Problem Set - Problems #6 - #9
Our Calculator Pad has sets of problems with answers and audio-guided help. If you want to learn how to use the formulas,t his is always a great starting location.

Tutorial on Electric Circuits; Lesson 3: Electrical Resistance
Our written Tutorial is the basis of the video tutorial. Thus, a trip to this page will provide a great refersher of what is going on.

Teacher Resources

Curriculum Corner, Electric Circuits Section
Our Curriculum Corner is composed of a collection of Think Sheets. Each one makes for a great component of any Lesson Plan. They work great for both independent practice exercises and cooperative group exercises. The following Think Sheet makes a great complement to this video:
Mathematical Relationships in Circuits

Teacher Toolkits: Circuit Concepts
Try a Teacher Toolkit ... you might be very glad that you did. Each toolkit includes annotated links to vetted resources from across the web that we feel reliably support the specific topic. Give this one on circuit concepts a try.

Physics Intractives: DC Circuit Builder
This simulation has loads of uses. We have five classroom-ready, easy-to-use exercises that accompany it. You might be interested in the Voltage-Current-Resistance activity.

Minds On Physics: Electric Circuits Module - Mission EC4 - Resistance, Voltage, and Current
Make sure your students understand the concept with this MOP Mission. They can rely on the Question-specific help (textbook icon) as needed. Use it with a Task Tracker subscription and allow us to keep track of student progress.

Minds On Physics: Electric Circuits Module - Mission EC5 - Voltage, Resistance, and Current Calculations
Make sure your students can use the equation to analyze a circuit and solve for an unknown. Using it with a Task Tracker subscription allows you to customize the activity. It's a great benefit.

Concept Builders: Electric Circuits - I=∆V/R Equations as a Guide to Thinking
This Concept Builder will provides students a great exercise with proportional reasoning. They will get immediate feedback and opportunities for correction.

Calculator Pad: Electric Circuits Problem Set - Problems #6 - #9
Our Calculator Pad has sets of problems with answers and audio-guided help. Send your students here for practice and check-ups.

Tutorial on Electric Circuits; Lesson 3: Electrical Resistance
Our written Tutorial is the basis of the video tutorial. Thus, a trip to this page will provide a great refersher of what is going on. Do what other teachers do - put a link to it on your course page.

Lesson Notes

Download (opens in a new tab) or view below

Slides

Do you like the slides we used? They are available in our low cost Teacher Presentation Pack, along with other updated materials used in our presentation.