Ch 4: Modeling Electricity

About This Chapter

Let us help you learn more about calculations, basic units and other concepts used to model electricity. Use these lessons and quizzes as a convenient, mobile study guide as you prepare for an upcoming test or homework assignment.

Modeling Electricity - Chapter Summary

Our instructors will explain what energy is and how it is transferred between sources. You will learn how to calculate power and its unique relationship with the concepts of time and work. A discussion of electrical charge, static electricity and the unique properties of electrical current follows.

As you progress through the chapter, the concepts of electrical potential and electrical potential difference are introduced, along with the definition of an ampere and the calculation associated with it. Both ammeters and voltmeters will be discussed, and a lesson devoted to energy measurement units and how to convert them is provided. After you have reviewed these lessons, you should be able to:

  • Describe how energy is transferred from one source to another
  • Calculate power and understand its relationship to work and time
  • Understand where static electricity comes from
  • Define electrical potential difference
  • Explain what an ampere is and where it can be found in the natural world
  • Differentiate between an ammeter and a voltmeter
  • Convert common energy measurement units

Our professionally-designed videos, lessons and quizzes help make your learning experience simple and engaging. Use the quizzes and tests to measure your understanding of the topic or to see which areas require additional review. If you have questions as you read through the chapters, contact one of our instructors for help. The lessons and quizzes are available for you to study and review at any time, seven days a week.

10 Lessons in Chapter 4: Modeling Electricity
Test your knowledge with a 30-question chapter practice test
What is Energy? - Definition and Significance in Nature

1. What is Energy? - Definition and Significance in Nature

This lesson describes the nature of energy and how it is transferred from one source into another. Additionally, it will describe the significance of energy in natural systems.

Power: Definition and Mathematics

2. Power: Definition and Mathematics

Work involves moving an object with a force, but power tells us how quickly that work is done. In this lesson, you will learn about how power depends on both work and time as well as see examples of how to calculate power.

Electric Charge and Force: Definition, Repulsion & Attraction

3. Electric Charge and Force: Definition, Repulsion & Attraction

Have you ever wondered what electricity is and where it comes from? Have you ever been zapped by static electricity and wondered how it got there? We'll answer all of these questions in this lesson on electric charge and force!

What is Electric Current? - Definition, Unit & Types

4. What is Electric Current? - Definition, Unit & Types

Like a river current is the flow of water molecules, electrical current is the flow of charged particles. In this lesson, we're going to explore what electrical current is, what causes it, and that, unlike a water current, electrical current doesn't always flow in one direction.

Potential Difference: Definition, Formula & Examples

5. Potential Difference: Definition, Formula & Examples

Electrical potential difference is the difference in the amount of potential energy a particle has due to its position between two locations in an electric field. This important concept provides the basis for understanding electric circuits.

What Is Electric Potential? - Definition & Formula

6. What Is Electric Potential? - Definition & Formula

In this lesson, discover what electric potential is and how we measure it. Learn about the scientist Alessandro Volta and why his work led us to name a unit of measurement after him.

Ampere: Definition & Calculation

7. Ampere: Definition & Calculation

The ampere is the unit of electric current. It is abbreviated as A and may also be called amp or amps. Learn how to calculate amperes and see examples of amperes in everyday life.

What is an Ammeter? - Definition & Function

8. What is an Ammeter? - Definition & Function

In this lesson, we'll learn what an ammeter is and what it has to do with electric circuits. We'll also talk about the proper ways to connect an ammeter in series and parallel circuits.

What is a Voltmeter? - Definition & Uses

9. What is a Voltmeter? - Definition & Uses

Voltmeters are ubiquitous in our world and critical to technology. In this lesson, you will learn what a voltmeter is, how it works, and how it's used.

Energy Measurement Units & Unit Conversion

10. Energy Measurement Units & Unit Conversion

It's important to understand both how energy is measured and the different units used in those measurements. In this lesson, you'll learn about common energy measurement units, as well as see examples showing how to convert between them.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

Earning College Credit

Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

Transferring credit to the school of your choice

Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.

Support