About This Chapter
Magnetism Concepts - Chapter Summary
Explore the concepts behind magnetic fields and forces through these review lessons. The chapter's lessons cover content that can help you on the SAT physics subject test. You'll learn about the following topics:
- Magnetic forces and moving charges
- Magnetic fields
- Electromagnetic induction
- Faraday's law
- Lenz's law
The lessons on magnetism in this chapter include practice questions and self-assessment quizzes that allow you to test your skills as you progress through the content. The short video lessons are geared toward preparing you properly for the SAT subject test. You may also use the key terms and lesson transcripts provided in the chapter.
Magnetism Concepts Objectives
The SAT physics subject test is an exam that assesses your knowledge of college-preparatory physics, as well as your reasoning and problem-solving abilities. Students taking the exam should have one year of introductory physics experience, with some prior lab work. Questions on magnetism and electricity account for about 18-24% of the test. Lessons in this chapter include questions that emulate actual problems on the SAT subject test. Some objectives of the lessons include:
- Understanding how magnetic fields are created
- Explaining how magnetic forces affect moving charges
- Listing variables that influence induction
- Defining Faraday's and Lenz's laws
The SAT physics subject test is comprised of 75 entirely multiple-choice questions. You have one hour to finish the exam and can score 200-800 points on the test. You may not bring calculators to this SAT subject exam, but only simple calculations will be required.
1. Magnetic Force: Definition, Poles & Dipoles
You're probably familiar with magnets, but have you ever stopped to consider how they work? In this lesson, we'll look at the root of magnetism and some of the fundamental properties of magnets.
2. What is a Magnetic Field?
Magnetic fields fill the space around all magnets, but they're impossible to detect with our own senses. We'll use a common tool to map out a magnetic field and then discuss ferromagnetic materials to see how a magnetic field can be used to create new magnets.
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. 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.
5. 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.
6. Electromagnetic Induction: Conductor to Conductor & Transformers
Every day, we make use of a special case of electromagnetic induction known as mutual induction. In this lesson, we'll talk about this special phenomenon and how it is used in many common devices.
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Other chapters within the SAT Subject Test Physics: Practice and Study Guide course