About This Chapter
AEPA General Science: Electrical Concepts - Chapter Summary
In your studies for the National Evaluation Series (NES) General Science certification exam, use this chapter to review the concepts and laws used to describe electrical forces, charges and power. Watch our professional instructors in this series of short, engaging and mobile-device-friendly lesson videos as they explain:
- Repulsive and attractive force of electric charges
- Electric force fields
- Coulomb's Law
- Qualities of insulators and conductors
- Voltage sources and energy conversion
- Types of electric current and variables of electric resistance
- Ohm's law
- Components and types of electric circuits
Be sure to test your understanding of the material presented with the lesson quizzes, which can be taken electronically or on printed worksheets. Use the results from these assessments to find topics you don't understand and then return to the lesson videos to improve your mastery over these topics. When you think you have a firm understanding of the topics discussed in this chapter, take the chapter exam to test your overall understanding of the material before you take the NES General Science exam.
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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Other chapters within the AEPA General Science (NT311): Practice & Study Guide course
- General Science: Scientific Inquiry
- General Science: Scientific Laws & Theories
- General Science: Scientific Data & Analysis
- General Science: Laboratory Equipment & Safety
- General Science: Science & Society
- General Science: Science in Daily Life
- General Science: Organization of Matter
- General Science: Characteristics of Matter
- General Science: Atomic Structure
- General Science: Nuclear Chemistry
- General Science: Energy & Matter
- General Science: Simple Compounds & Chemical Formulas
- General Science: Types of Chemical Reactions
- General Science: The Mole Concept
- General Science: The Periodic Table
- General Science: Chemical Reactions
- General Science: Equilibrium
- General Science: Acid-Base Chemistry
- General Science: Solutions & Solubility Factors
- General Science: Physics & Motion
- General Science: Newton's Laws
- General Science: Analyzing Motion
- General Science: Analyzing Forces
- General Science: Magnetic Fields & Forces
- General Science: Electromagnetic Spectrum
- General Science: Waves, Optics & Sound
- General Science: Cell Structure & Function
- General Science: Cell Reproduction & Division
- General Science: Biochemistry of Life
- General Science: Characteristics of Living Organisms
- General Science: Plant Structures & Functions
- General Science: The Circulatory System
- General Science: The Nervous System
- General Science: The Immune & Endocrine Systems
- General Science: Other Physiological Systems
- General Science: Reproduction & Development
- General Science: Basic Genetics
- General Science: DNA Transcription & Translation Process
- General Science: Genetic Engineering
- General Science: Evolution
- General Science: History of Life
- General Science: Ecosystems
- General Science: Community & Population Ecology
- General Science: Earth Materials
- General Science: Rocks & Minerals
- General Science: Historical Geology
- General Science: Erosion, Weathering & Wasting
- General Science: Earth's Structure & Processes
- General Science: Plate Tectonics
- General Science: The Water Cycle
- General Science: Oceans
- General Science: Glaciers
- General Science: Other Bodies of Water
- General Science: Earth's Atmosphere & Climate
- General Science: Basic Weather Concepts
- General Science: The Solar System
- General Science: Earth, Moon & Sun
- General Science: Characteristics of the Moon
- General Science: The Universe
- General Science: Orbits of Celestial Bodies
- AEPA General Science Flashcards