About This Chapter
How it works:
- Identify the lessons in Holt Physical Science Introduction to Electricity chapter with which you need help.
- Find the corresponding video lessons within this companion course chapter.
- Watch fun videos that cover the electricity 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 about:
- Electric charge and force
- Arrow direction and spacing in electric force fields
- Insulators and conductors
- Electric currents and units
- Electric potential and charge collections
- Voltage sources
- Ohm's Law
- Electric circuit fundamentals
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1. Electric Charge and Force: Definition, Repulsion & Attraction
Electricity is created by the electric charge that electrons and protons possess. Explore atoms and electric charge, ions, conservation of charge, forces between charged particles, and static electricity.
2. Electric Force Fields and the Significance of Arrow Direction & Spacing
Electric force fields exist not only in science fiction movies, but also in everyday life, at the atomic level. In this lesson, dive into electric force and what exactly is significant about arrow direction and spacing in electric field diagrams.
3. Insulators and Conductors: Examples, Definitions & Qualities
Not all atoms and materials conduct electricity the same way. Define conductivity, learn about insulators and conductors, and understand that good electrical conductors also act as good heat conductors.
4. What is Electric Current? - Definition, Unit & Types
Electrical current involves the flow of charged particles, or electrons, and it is an integral part of electricity. In this lesson, we will dive into the definition of current, as well as the unit and types to understand just how electricity moves.
5. Electric Potential: Charge Collections and Volt Unit
Charge collections, or groups of charged particles, determine electric potential. Learn about charge collections, volt units, the effect of charge density, and how voltage is created and measured.
6. Voltage Sources: Energy Conversion and Examples
Electrons are motivated to power circuits through voltage sources, which can be clearly seen in batteries and other everyday items. Generators can come in the form of nuclear, coal, natural gas, hydroelectric, and wind power to generate voltage. In this lesson, learn about energy conversion, voltage, voltage sources, and examples of these things in everyday life, including batteries and generators.
7. Electrical Resistance: Definition, Unit & Variables
Electrical resistance refers to the force that impedes electrons in an electrical current flowing through a conductor. Explore the causes of electrical resistance, the various factors that can affect the resistance of different objects, as well as the practical applications of objects with high resistance.
8. Ohm's Law: Definition & Relationship Between Voltage, Current & Resistance
Ohm's Law describes the relationship between voltage, current, and resistance. Learn about Ohm's Law and understand this relationship, including its importance. Use the Ohm's Law equation to calculate the values of voltage, current, and resistance.
9. What is Electric Power?
Electric power and its ability to measure energy in watts has become something that technical and non-technical people can understand quite easily. This lesson considers electric power, watts, current, voltage, resistance, and all of these variables' relation to each other.
10. Electric Circuit Fundamentals: Components & Types
Electric circuit fundamentals include components of two types of circuits. Explore the differences between series and parallel circuits and how voltage, total resistance, and current are affected in each type of circuit when more resistances are added.
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Other chapters within the Holt Physical Science: Online Textbook Help course
- Holt Physical Science Chapter 1: The World of Physical Science
- Holt Physical Science Chapter 2: The Properties of Matter
- Holt Physical Science Chapter 3: States of Matter
- Holt Physical Science Chapter 4: Elements, Compounds, and Mixtures
- Holt Physical Science Chapter 5: Matter in Motion
- Holt Physical Science Chapter 6: Forces and Motion
- Holt Physical Science Chapter 7: Forces in Fluids
- Holt Physical Science Chapter 8: Work and Machines
- Holt Physical Science Chapter 9: Energy and Energy Resources
- Holt Physical Science Chapter 10: Heat and Heat Technology
- Holt Physical Science Chapter 11: Introduction to Atoms
- Holt Physical Science Chapter 12: The Periodic Table
- Holt Physical Science Chapter 13: Chemical Bonding
- Holt Physical Science Chapter 14: Chemical Reactions
- Holt Physical Science Chapter 15: Chemical Compounds
- Holt Physical Science Chapter 16: Atomic Energy
- Holt Physical Science Chapter 18: Electromagnetism
- Holt Physical Science Chapter 19: Electronic Technology
- Holt Physical Science Chapter 20: The Energy of Waves
- Holt Physical Science Chapter 21: The Nature of Sound
- Holt Physical Science Chapter 22: The Nature of Light
- Holt Physical Science Chapter 23: Light and Our World