Ch 34: Chapter 34: Electric Current

About This Chapter

The Electric Current chapter of this Prentice Hall Conceptual Physics Companion Course helps students learn the essential physics lessons of electric current. Each of these simple and fun video lessons is about five minutes long and is sequenced to align with the Electric Current textbook chapter.

How It Works:

  • Identify the lessons in Prentice Hall Conceptual Physics' Electric Current chapter with which you need help.
  • Find the corresponding video lessons within this companion course chapter.
  • Watch fun videos that cover the electric current topics you need to learn or review.
  • Complete the quizzes to test your understanding.
  • If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our instructors.

Students will learn:

  • Types of electric current
  • Examples of voltage sources
  • Variables that affect electrical resistance
  • Ohm's law
  • Benefits and drawbacks of alternating current
  • Formulas for calculating electric power

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6 Lessons in Chapter 34: Chapter 34: Electric Current
Test your knowledge with a 30-question chapter practice test
What is Electric Current? - Definition, Unit & Types

1. 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.

Voltage Sources: Energy Conversion and Examples

2. Voltage Sources: Energy Conversion and Examples

We use them every day, but no one really gives them much thought. What are we talking about? Why, voltage sources, of course! Batteries and generators are two of the most common sources of voltage that power our daily lives. We'll look at them in detail to see how they work.

Electrical Resistance: Definition, Unit & Variables

3. 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.

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.

Alternating Current: Definition, Advantages & Disadvantages

5. Alternating Current: Definition, Advantages & Disadvantages

Alternating current (AC) is easy to generate and use, with numerous advantages over direct current. In this lesson, we'll define AC, discuss its advantages and disadvantages, and provide a quiz.

What is Electric Power?

6. What is Electric Power?

Power is a word we use all the time, but do you really know what it means? We'll look at how electrical power relates to voltage, current and resistance and how knowing that relationship can help you in everyday life.

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

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