Ch 12: Direct Current Circuits in Physics: Help and Review

About This Chapter

The Direct Current Circuits chapter of this High School Physics Help and Review course is the simplest way to master direct current circuits. This chapter uses simple and fun videos that are about five minutes long, plus lesson quizzes and a chapter exam to ensure students learn the essentials of direct current circuits.

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.
  • Experience difficulty understanding your teachers.
  • Missed class time and need to catch up.
  • Can't access extra science resources at school.

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?

10 Lessons in Chapter 12: Direct Current Circuits in Physics: Help and Review
Test your knowledge with a 30-question chapter practice test
What is Electric Current? - Definition, Unit & Types

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.

Electrical Resistance: Definition, Unit & Variables

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.

Electric Circuit Fundamentals: Components & Types

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.

Series Circuits: Definition & Concepts

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.

Parallel Circuits: Definition & Concepts

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.

Applying Kirchhoff's Rules: Examples & Problems

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.

Alternating Current: Definition, Advantages & Disadvantages

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.

What is a Breadboard? - Basics & Layout

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.

Resistor-Capacitor (RC) Circuits: Definition & Explanation

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.

Resistor-Capacitor (RC) Circuits: Practice Problems

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.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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