Electric Power Revisited
The Electric Power Equations Video Tutorial shows the derivation of three equations for electric power. The use of the equations is explained. Numerous examples, illustrations, and animations assist in the explanations.
The video lesson answers the following questions:
- What are the mathematical equations for the power in electric circuits?
- How do you use those equations?
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, Mission EC6: P, V, I, R, and Cost Calculations
Minds On Physics will always give you a great workout with close reading, critical thinking and conceptual reasoning. Try this one.
Concept Builders, Case Studies: Electric Power
This Concept Builder is a perfect accompaniment to the video. Take some time to put practice your skill at using the equations.
Calculator Pad, Electric Circuits Problem Set, Problems #10 - #19
When you're trying to learn how to use an equation to solve problems, don't ignore a self-paced session at our Calculator Pad. You will find a set of problems, answers, and an audio-guided solution.
Physics Classroom Tutorial: Circuits Chapter, Lesson 3: Electric Power Revisited
First there was our written Tutorial. Then there was our video Tutorial. If you need to quickly review the topic, why not try a short trip to this page.
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 Sheets make a great complement to this video:
Mathematical Relationships in Circuits
Electrical Power and Energy
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.
Minds On Physics, Mission EC6: P, V, I, R, and Cost Calculations
You can always be confident that Minds On Physics will give a student a great workout with close reading, critical thinking and conceptual reasoning. Use it with a Task Tracker subscription and you will get the full benefit of being able to track your students' progress.
Concept Builders, Case Studies: Electric Power
This Concept Builder is a perfect accompaniment to the video. Given the relative resistance, electrical potential difference, and/or current of two circuits, students must compare their relative power. The exercise demands great thinking and reasoning and understanding. Question-specific help is available by a click on the Help Me! button.
Calculator Pad, Electric Circuits Problem Set, Problems #10 - #19
When yyour class is trying to learn how to use an equation to solve problems, don't ignore the power of our Calculator Pad section. There is a set of problems, answers, and an audio-guided solution.
Physics Classroom Tutorial: Circuits Chapter, Lesson 3: Electric Power Revisited
First there was our written Tutorial. Then there was our video Tutorial. If a student needs to quickly review the topic, a trip to this page is worth the time.
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.