About This Chapter
Magnetism Overview - Chapter Summary
If you need help understanding magnetism, this chapter can help! Short lessons provide in-depth analyses of the Biot-Savart Law, electromagnetic induction, Lenz's Law, R-L-C series circuits and more. Study these topics with help from top instructors in a flexible and secure online environment. Once you've completed this chapter, you will be able to:
- Define Ampere's Law
- Explain how magnetic fields are created
- Share the definition of a solenoid
- Detail how magnetic forces impact moving charges
- Provide definitions of voltmeters, ammeters and moving coil galvanometers
- Describe factors that influence the strength of electromagnetic induction
- Discuss Faraday's Law of electromagnetic induction
- List the advantages and disadvantages of alternating currents
Feel free to select any lessons to view based on your desire to refresh or expand your understanding of magnetism. Visit these lessons as often as needed, and review them in any order. If you hit a snag and want to clarify details presented in the lessons, be sure to send your questions to our experts. At any time, assess your comprehension of magnetism by taking multiple-choice quizzes and a chapter exam.
1. The Biot-Savart Law: Definition & Examples
After watching this lesson you will be able to explain what the Biot-Savart Law is, and use the simplified version to solve problems. A short quiz will follow.
2. Ampere's Law: Definition & Examples
After watching this video, you will be able to explain what Ampere's Law is, and use Ampere's Law for a long, straight, current-carrying wire to solve problems. A short quiz will follow.
3. How Magnetic Fields Are Created
Have you ever wondered how magnetic fields are created? In this lesson, we'll discuss the very simple answer to this question and look at how electric current can be used to make electromagnets, which have many everyday applications.
4. What is Solenoid? - Definition, Uses & Examples
In this lesson, you will learn what a solenoid is, how it relates to electromagnets, and how it is used in a few real-life situations. A short quiz will follow.
5. How Magnetic Forces Affect Moving Charges
A magnetic field exerts a force on a moving charged particle in ways that you might not expect. In this lesson, we're going to look at the direction of this force and the factors that affect its strength.
6. What is a Voltmeter? - Definition & Uses
Voltmeters are ubiquitous in our world and critical to technology. In this lesson, you will learn what a voltmeter is, how it works, and how it's used.
7. What is an Ammeter? - Definition & Function
In this lesson, we'll learn what an ammeter is and what it has to do with electric circuits. We'll also talk about the proper ways to connect an ammeter in series and parallel circuits.
8. Electromagnetic Induction: Definition & Variables that Affect Induction
We use electromagnetic induction every day, but do you have any idea what it is? In this lesson, we'll discuss this everyday phenomenon, the factors that affect its strength and its most common applications.
9. Faraday's Law of Electromagnetic Induction: Equation and Application
Electromagnetic induction allows us to induce voltage with the movement of a magnetic field. Credited to Michael Faraday, this discovery was not only groundbreaking at the time, but it has since led to many applications in everyday life.
10. Lenz's Law, Magnetic Flux and Motional EMF
Did you know that you can produce electricity by simply moving a magnet? In this lesson, learn more about electromagnetic induction and how electricity is generated.
11. 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.
12. R-L-C Series Circuits
After watching this lesson, you will be able to explain what an RLC series circuit is and use related equations to solve simple problems. A short quiz will follow.
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