Ch 12: Overview of Current Electricity

About This Chapter

Use this chapter to help you retain information about current electricity with short lessons that include examples and practice problems. If you would like to help prepare for a class discussion or assignment, you can use these lessons to help do that.

Overview of Current Electricity- Chapter Summary

This chapter contains lessons that provide a thorough explanation of current electricity. Lessons cover the various types of potentiometers, the causes of electric currents, and information about electron mobility. Other lessons look at the relationship between voltage, current and resistance, and give the formula for drift velocity of charge carriers. This chapter will go over the following objectives and show you how to:

  • Distinguish the differences between insulators and conductors
  • Recognize types of electric current
  • Analyze the components of Ohm's law
  • Identify how electrical resistance works
  • Explore resistance in the three main kinds of circuits
  • Discuss Kirchhoff's rules

Our instructors will walk you through each lesson using real-world examples to increase retention. They present these lessons to you in fun and engaging ways. As you work your way through the chapter, watching the video lessons, reading the lesson transcripts and taking the self-assessment quizzes, know that our instructors are there every step of the way. If you are struggling to understand a concept, you can ask our instructors any questions you may have.

8 Lessons in Chapter 12: Overview of Current Electricity
Test your knowledge with a 30-question chapter practice test
Insulators and Conductors: Examples, Definitions & Qualities

1. Insulators and Conductors: Examples, Definitions & Qualities

In this lesson, we'll explore the reasons that some materials conduct electrical energy with ease while others block it almost completely. We'll also talk about the property of conductivity and some everyday examples of insulators and conductors.

Drift Velocity & Electron Mobility: Definitions & Formula

2. Drift Velocity & Electron Mobility: Definitions & Formula

Electric charge moving through a conductor is electric current. Mobile charge carriers don't have a straight path through a conductor. This lesson describes the drift velocity of charge carriers and how to calculate it.

What is Electric Current? - Definition, Unit & Types

3. 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.

Ohm's Law: Definition & Relationship Between Voltage, Current & Resistance

4. Ohm's Law: Definition & Relationship Between Voltage, Current & Resistance

Did you know that electrical current is affected by the voltage and resistance in a circuit? In this lesson, we'll use Ohm's law, which tells us how current, voltage, and resistance are related, as we work through several electric circuit examples.

Electrical Resistance: Definition, Unit & Variables

5. Electrical Resistance: Definition, Unit & Variables

We'll take a shopping trip to the mall to learn how electrical resistance works and how it is affected by resistivity, conductor dimensions, and temperature. We'll also take a look at several common appliances that take advantage of resistance to function.

Finding the Equivalent Resistance: Series, Parallel & Combination Circuits

6. Finding the Equivalent Resistance: Series, Parallel & Combination Circuits

How does resistance impact the way that electrical currents flow through a circuit That's what we are exploring in this lesson. We'll check out resistance in the three main kinds of circuits and practice calculating this value.

Applying Kirchhoff's Rules: Examples & Problems

7. Applying Kirchhoff's Rules: Examples & Problems

Ohm's Law can be useful for analyzing simple circuits, but when circuits are more complex, as they often are, we can instead analyze the circuits using Kirchhoff's rules. Learn about Kirchhoff's rules in this lesson.

What is a Potentiometer? - Definition & Types

8. What is a Potentiometer? - Definition & Types

This lesson defines a potentiometer and a method to calculate the voltage output of a potentiometer. Two main types of potentiometers are discussed, linear and rotary, with some details on their construction.

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