About This Chapter
Who's it for?
This unit of our High School Physics Homeschool course will benefit any student who is trying to learn about the rules and variables of direct current circuits. There is no faster or easier way to learn about physics. Among those who would benefit are:
- Students who require an efficient, self-paced course of study to learn about factors that influence the resistance of a conductor.
- Homeschool parents looking to spend less time preparing lessons and more time teaching.
- Homeschool parents who need a physics curriculum that appeals to multiple learning types (visual or auditory).
- Gifted students and students with learning differences.
How it works:
- Students watch a short, fun video lesson that covers a specific unit topic.
- Students and parents can refer to the video transcripts to reinforce learning.
- Short quizzes and a Direct Current Circuits in Physics unit exam confirm understanding or identify any topics that require review.
Direct Current Circuits in Physics Unit Objectives:
- Explain Kirchhoff's rules.
- Define parallel circuits.
- Describe the conditions that create an electrical current.
- Explain voltage, resistance and current in circuitry.
- Learn about direct and alternating current.
1. 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.
2. 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.
3. 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.
4. Series Circuits: Definition & Concepts
When you flip a switch to turn your lights on, you are completing a circuit and providing a pathway for electrons to flow. In this lesson, you'll learn how connecting devices in a series along that circuit affects the current and resistance throughout.
5. Parallel Circuits: Definition & Concepts
People moving through an airport are similar to electrons moving through a circuit. Parallel circuits are one type of simple circuit, and they get their name from the multiple, parallel paths they provide for electron flow.
6. Applying Kirchhoff's Rules: Examples & Problems
Ohm's Law can be useful for analyzing simple circuits, but when circuits are more complex, as they often are, we can instead analyze the circuits using Kirchhoff's rules. Learn about Kirchhoff's rules in this lesson.
7. Resistor-Capacitor (RC) Circuits: Definition & Explanation
Resistor-capacitor (RC) circuits are everywhere because they are useful in our everyday lives. The current in these circuits varies with time, making them both practical and common in many types of electronic equipment.
Earning College Credit
Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.
To learn more, visit our Earning Credit Page
Transferring credit to the school of your choice
Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.
Other chapters within the High School Physics: Homeschool Curriculum course
- Introduction to High School Physics: Homeschool Curriculum
- Vectors in Physics: Homeschool Curriculum
- Kinematics in Physics: Homeschool Curriculum
- Newton's Laws in Physics: Homeschool Curriculum
- Work, Energy & Power in Physics: Homeschool Curriculum
- Linear Momentum in Physics: Homeschool Curriculum
- Rotational Motion in Physics: Homeschool Curriculum
- Circular Motion & Gravitation in Physics: Homeschool Curriculum
- Oscillations in Physics: Homeschool Curriculum
- Electrical Forces and Fields in Physics: Homeschool Curriculum
- Potential & Capacitance in Physics: Homeschool Curriculum
- Magnetism in Physics: Homeschool Curriculum
- Waves, Sound & Light - High School Physics: Homeschool Curriculum
- Atomic and Nuclear Physics - High School: Homeschool Curriculum
- Fluid Mechanics in Physics: Homeschool Curriculum
- Thermal Physics & Thermodynamics: Homeschool Curriculum
- Relativity & Quantum Theory: Homeschool Curriculum
- High School Physics - The Universe: Homeschool Curriculum
- Motion - Physics Lab Experiments: Homeschool Curriculum
- Matter & Light - Physics Lab Experiments: Homeschool Curriculum
- Electricity - Physics Lab Experiments: Homeschool Curriculum