About This Chapter
Circuit Electricity - Chapter Summary
Our instructors will introduce you to the basics of circuit theory and the differences between AC and DC circuits. Both series circuits and parallel circuits will be defined with examples given, as well as electrical resistance and how it works in several common appliances. The Ohm and Ohm's Law are covered, including how to graph this important physics law.
Your study will continue with a discussion of resistance and how it relates to circuits, as well as how RC circuits work. How to use equations to calculate energy transfers in circuits is also included. After you review this chapter, you should feel confident in your abilities to:
- Differentiate between AC and DC circuits
- Define series circuit as it relates to a parallel circuit
- Explain what affects electrical resistance
- Understand what an ohm is and how to calculate its resistance
- Describe Ohm's Law and how it is used and graphed
- Calculate the current and voltage in an RC circuit
- Use formulas to calculate energy transfers in the circuits of electronic devices
Our mobile-friendly lessons and quizzes are available for you to review 24 hours a day, seven days a week. Use the quizzes and chapter tests to gauge your understanding of the material and where you may need to focus your study. Each lesson is accompanied by a printable transcript so you can make a copy to review offline any time. If you need additional assistance as you work through the lessons, contact one of our instructors for help.
1. Circuit Theory Basics
Learn what a circuit is, how to describe the features of circuits, and be able to differentiate between AC and DC circuits in everyday life. Complete a quiz to test your knowledge.
2. What is a Series Circuit? - Definition & Example
In this lesson, we'll define what a series circuit is and compare it with a parallel circuit. Keep reading to see practical examples of series circuits, see descriptions of the components used, and get explanations of the concept of equivalent circuits.
3. Parallel Circuits: Definition & Examples
In this lesson, learn more about parallel electrical circuits. We'll review some electrical circuit fundamentals, look at the defining characteristics of parallel circuits, and explore several concrete 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. Ohm: Definition & Formula
All electrical circuits have resistance, and the basic unit of resistance is the ohm. This lesson provides a deeper understanding of the ohm, how to calculate resistance in ohms, and a quiz to test your understanding.
6. 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.
7. Graphing Ohm's Law: Current vs. Potential Difference
In this lesson, learn how to use a graph of current vs. potential difference to find the resistance of a resistor and to identify which types of resistors obey Ohm's law.
8. Finding the Equivalent Resistance: Series, Parallel & Combination Circuits
How does resistance impact the way that electrical currents flow through a circuit That's what we are exploring in this lesson. We'll check out resistance in the three main kinds of circuits and practice calculating this value.
9. Resistor-Capacitor (RC) Circuits: Practice Problems
After watching this video, you will be able to calculate or deduce the current and voltage in the components of an RC circuit at the start of the charging process and when the capacitor is fully charged. A short quiz will follow.
10. Energy Transfers in Circuits: Equations & Examples
In a circuit, energy is always being transformed from electrical energy into other forms, like light and thermal energy. In this lesson, learn how energy is transformed and how to calculate exactly how much energy is transformed in a circuit.
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Other chapters within the VCE Physics: Exam Prep & Study Guide course
- Overview of Thermodynamics
- Thermodynamics & Climatology
- Energy Conservation & Efficiency
- Modeling Electricity
- Electronic Device Use & Safety
- Electricity Generation & Transmission
- Origins of the Universe
- Subatomic Particles in the Nucleus
- Atomic Energy
- Modeling Motion
- Force & Motion in Physics
- Energy & Motion in Physics
- Laws of Motion Applied Problem Solving
- The Theory of Relativity
- Interactions of Fields in Physics
- Effects of Fields in Physics
- Applications of Fields in Physics
- Properties of Mechanical Waves
- Light as an Electromagnetic Wave
- Wave-Particle Duality & Quantum Mechanics
- Conducting a Scientific Investigation
- Scientific Investigation for the VCE Physics Exam
- VCE Physics Flashcards