About This Chapter
Electric Power & Electricity - Chapter Summary and Learning Objectives
We all use it, but just what is electric power? Through these video lessons with quizzes, you can learn about electric current, the qualities of conductors and insulators, charge collections and electric force fields. In addition, you can find out about Ohm's Law and Coulomb's Law and discover what they teach us about electricity. When you're finished with this chapter, you should be able to:
- Discuss the fundamentals of electric circuits
- Explain various voltage sources
- Understand electric charge and force fields
- Discuss applied electricity
|What is Electric Power?||Explore the relationships between current, voltage and resistance.|
|Electric Circuit Fundamentals: Components & Types||Compare parallel and series circuits.|
|Ohm's Law: Definition & Relationship Between Voltage, Current & Resistance||Learn how Ohm's Law explains these relationships in electric circuits.|
|Electrical Resistance: Definition, Unit & Variables||Define resistivity, temperature and conductor dimensions.|
|What is Electric Current? - Definition, Unit & Types||Discover that electrical current can flow in more than one direction.|
|Insulators and Conductors: Examples, Definitions & Qualities||Learn why some materials block the passage of electricity and others conduct the energy.|
|Voltage Sources: Energy Conversion and Examples||Explore generators and batteries.|
|Coulomb's Law: Variables Affecting the Force Between Two Charged Particles||Find out how charge, force and distance are related.|
|Electric Potential: Charge Collections and Volt Unit||Learn about how charged particles are motivated to work. Define voltage and find out how it's measured.|
|Electric Force Fields and the Significance of Arrow Direction & Spacing||Learn how to draw sketches to represent force fields.|
|Electric Charge and Force: Definition, Repulsion & Attraction||Investigate the sources of electricity.|
|Applied Electricity||Discuss how electricity becomes useful through generation and storage.|
1. 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.
2. Electric Circuit Fundamentals: Components & Types
Electric circuits can be configured to power several loads, such as light bulbs, in series or in parallel. In this lesson, we'll look at both types of circuits and see how the voltage, current, and resistance are affected by installing additional loads.
3. 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.
4. 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.
5. 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.
6. 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.
7. 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.
8. Coulomb's Law: Variables Affecting the Force Between Two Charged Particles
In the 18th century, Charles Coulomb uncovered the secrets of electrostatic force between charged particles. The results of his experiments led to what is now known as Coulomb's Law, which tells us how force, charge, and distance are all related.
9. Electric Potential: Charge Collections and Volt Unit
In this lesson, we'll find out that electric charges can be rather lazy until something motivates them to get work done. Find out what gives electric charges the potential to do work and how we measure that potential with something called voltage.
10. Electric Force Fields and the Significance of Arrow Direction & Spacing
Did you know that force fields don't just exist in science fiction movies? In this lesson, we'll explore the electric force fields that surround charged particles and how we can draw diagrams that represent them.
11. 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!
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Other chapters within the DSST Principles of Physical Science: Study Guide & Test Prep course
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- DSST Informational Resources
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