Chapter 12

The Nature of a Magnetic Field

The Nature of a Magnetic Field

Ferromagnetic Materials

Electromagnetism

Electromagnetism

Flux and Flux Density

Flux and Flux Density

Magnetic Circuits

Magnetic Circuits

Air Gaps, Fringing, and
 Laminated Cores

Series Elements and
Parallel Elements

Series Elements and
Parallel Elements

Magnetic Circuits with dc Excitation

Magnetic Circuits with dc Excitation

Magnetic Field Intensity

Relationship Between B and H

Relationship Between B and H

Ampere’s Circuital Law

Series Magnetic Circuits

Series-Parallel Magnetic Circuits

Series Magnetic Circuits

Series Magnetic Circuits

Forces Due to an Electromagnet

Properties of Magnetic Materials

Properties of Magnetic Materials

Magnetizing a Specimen

Magnetizing a Specimen

Measuring Magnetic Fields

Measuring Magnetic Fields