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Chapter 14: Magnetism

Difficulty Level: At Grade Created by: CK-12

Introduction

The Big Idea

For static electric charges, the electromagnetic force is manifested by the Coulomb electric force alone. If charges are moving, an additional force emerges, called magnetism. The 19th century realization that electricity and magnetism are dual aspects of the same force completely changed our understanding of the world we live in. Insights due to Ampere, Gauss, and Maxwell led to the understanding that moving charges – electric currents – create magnetic fields. Varying magnetic fields create electric fields. Thus a loop of wire in a changing magnetic field will have current induced in it. This is called electromagnetic induction. Magnetic fields are usually denoted by the letter B and are measured in Teslas, in honor of the Serbian physicist Nikola Tesla.

Chapter Outline

Chapter Summary

Summary

These lessons cover magnetic fields, magnetic forces and electromagnetic induction.

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Difficulty Level:
At Grade
Subjects:
Grades:
Date Created:
Feb 24, 2012
Last Modified:
Jan 04, 2016
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