About This Chapter
Who's it for?
Anyone who needs help understanding high school physics material will benefit from taking this course. You will be able to grasp the subject matter faster, retain critical knowledge longer and earn better grades. You're in the right place if you:
- Have fallen behind in understanding the difference between direct and alternating current or the components of electric circuits.
- Need an efficient way to learn about direct current circuits.
- Learn best with engaging auditory and visual tools.
- Struggle with learning disabilities or learning differences, including autism and ADHD.
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How it works:
- Start at the beginning, or identify the topics that you need help with.
- Watch and learn from fun videos, reviewing as needed.
- Refer to the video transcripts to reinforce your learning.
- Test your understanding of each lesson with short quizzes.
- Submit questions to one of our instructors for personalized support if you need extra help.
- Verify you're ready by completing the Direct Current Circuits in Physics chapter exam.
Why it works:
- Study Efficiently: Skip what you know, review what you don't.
- Retain What You Learn: Engaging animations and real-life examples make topics easy to grasp.
- Be Ready on Test Day: Use the Direct Current Circuits in Physics chapter exam to be prepared.
- Get Extra Support: Ask our subject-matter experts any relevant question. They're here to help!
- Study With Flexibility: Watch videos on any web-ready device.
Students will review:
In this chapter, you'll learn the answers to questions including:
- How do the different types of electrical current compare to each other?
- What are some of the factors that affect electrical resistance?
- What are the major parts of electric circuits?
- How do parallel and series circuits work?
- What are some practical applications of Kirchhoff's rules?
- How do resistor-capacitor circuits work?
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. Alternating Current: Definition, Advantages & Disadvantages
Alternating current (AC) is easy to generate and use, with numerous advantages over direct current. In this lesson, we'll define AC, discuss its advantages and disadvantages, and provide a quiz.
8. What is a Breadboard? - Basics & Layout
When you are designing and building a circuit, there comes a time when you have to actually build the circuit. Rather than running to a manufacturer (expensive!), we first build breadboard versions of our circuits to test them.
9. 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.
10. 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.
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Other chapters within the High School Physics: Help and Review course
- Introduction to Physics: Help and Review
- Vectors in Physics: Help and Review
- Kinematics in Physics: Help and Review
- Newton's Laws in Physics: Help and Review
- Work, Energy, & Power in Physics: Help and Review
- Linear Momentum in Physics: Help and Review
- Rotational Motion in Physics: Help and Review
- Circular Motion and Gravitation in Physics: Help and Review
- Oscillations in Physics: Help and Review
- Electrical Forces and Fields in Physics: Help and Review
- Potential and Capacitance in Physics: Help and Review
- Magnetism in Physics: Help and Review
- Waves, Sound, and Light: Help and Review
- Atomic and Nuclear Physics: Help and Review
- Fluid Mechanics in Physics: Help and Review
- Thermal Physics & Thermodynamics: Help and Review
- Relativity & Quantum Theory in Modern Physics: Help and Review
- The Universe in Physics: Help and Review
- Physics Lab Experiments: Motion: Help and Review
- Physics Lab Experiments: Matter & Light: Help and Review
- Physics Lab Experiments: Electricity: Help and Review