About This Chapter
Electricity Fundamentals - Chapter Summary
Electricity is one of the many scientific wonders we take for granted every day in our modern lives. This chapter improves your understanding of how electricity works and the variables that affect it. You'll even find two physics lab lessons on change in electric currents and building series and parallel circuits. Following this chapter you should have a better understanding of:
- What electric power is and how it is related to electric current
- How to create changes in electric current
- How voltage sources convert energy
- How Ohm's law explains the relationship between voltage, current and resistance
- Examples of insulators and conductors and what variables affect electrical resistance
- How arrows are drawn and spaced with depictions of electric force fields
- How electric charges and forces work with each other
- Why Coulomb's law is effective at explaining the variables that affect the force between two charged particles
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. 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.
3. Change in Electric Current: Physics Lab
After completing this lab, you will be able to explain what electric current is, and how it is affected by resistors in a circuit. You can also take a short quiz to test your knowledge.
4. 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.
5. 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.
6. Building Series & Parallel Circuits: Physics Lab
After completing this lab, you will be able to explain the difference between series and parallel circuits, and describe how the voltage and current vary across them. A short quiz will follow.
7. 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.
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. 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 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.
12. 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!
13. 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.
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Other chapters within the Physical Science: High School course
- Understanding Matter
- Understanding Gases
- Understanding the Atom & Atomic Structure
- The Periodic Table
- Understanding Chemical Bonding
- Understanding Solutions
- Acids, Bases and Chemical Reactions
- Understanding Motion
- Force, Motion, and Newton's Laws
- Work, Energy, Power, and Thermodynamics
- Waves and Sound in Physical Science
- Light in Physical Science
- The Universe