About This Chapter
Electricity - Chapter Summary and Learning Objectives
Electricity runs our world. Think about how lost you would be if there was no electricity. The thought might be enough to make you panic. Imagine trying to light a lantern or build a fire just so you have some light. Try getting your hair dry in the morning without the use of a blow dryer. Forget about trying to work without any computers. Electricity is everywhere. In this chapter, we will take a look at electricity, how it works and its components. You'll begin to understand more about this type of power that is such a large part of our world. In these lessons, you'll learn things like:
- Why some materials become charged and others don't
- What causes repulsion and attraction
- What makes a good conductor
- How batteries convert chemical energy into electrical potential
- What an electric current is
- Types of circuits
|Electric Charge and Force: Definition, Repulsion & Attraction||Examine electrical charge.|
|Electric Force Fields and the Significance of Arrow Direction & Spacing||Explore the idea of electric force fields.|
|Coulomb's Law: Variables Affecting the Force between Two Charged Particles||Discover Coulomb's law.|
|Electric Potential: Charge Collections and Volt Unit||Study the volt unit of electricity.|
|Insulators and Conductors: Examples, Definitions & Qualities||Analyze what makes a good electrical conductor.|
|Voltage Sources: Energy Conversion and Examples||Study voltage sources and learn how batteries convert chemical energy into electrical potential.|
|What is Electric Current? - Definition, Unit & Types||Examine current as the movement of electrons in a conductor.|
|Electrical Resistance: Definition, Unit & Variables||Discover electrical resistance.|
|Ohm's Law: Definition & Relationship between Voltage, Current & Resistance||Take a look at the relationship between voltage, current and resistance.|
|Electric Circuit Fundamentals: Components & Types||Explore the idea of electrical components.|
|What is Electric Power?||See how electrical power relates to voltage, current and resistance.|
1. 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!
2. 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.
3. 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.
4. 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.
5. 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.
6. 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.
7. 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.
8. 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.
9. 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.
10. 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.
11. 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.
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