Barron's Physics Practice Plus by Robert Jansen

Author:Robert Jansen
Language: eng
Format: epub
Publisher: Barrons Educational Services
Published: 2022-05-23T00:00:00+00:00

The resulting equation, P = IV, can be combined with Ohm’s law, V = IR, to create other useful power-equation variations.

Most problems can be answered using both P = IV and V = IR as separate equations. However, being aware of all of the power-equation variations does allow for faster problem solving.

CHAPTER 13

Magnetism

Learning Objectives

In this chapter, you will learn how to:

∘Examine the properties of magnetism and the types of magnets

∘Draw, analyze, and solve problems for uniform magnetic fields

∘Draw, analyze, and solve problems for the magnetic fields that surround current-carrying wires

∘Analyze how electricity can be generated by changing magnetic flux in order to create electrical pressure, to create emf, and to induce current flow

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