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Inductance

IN THIS CHAPTER, YOULL LEARN ABOUT ELECTRICAL COMPONENTS THAT OPPOSE THE FLOW OF AC BY storing energy as magnetic fields. We call these devices inductors, and we call their action inductance. Inductors usually comprise wire coils, but even a length of wire or cable can form an inductor.

The Property of Inductance

Imagine a wire 1,000,000 miles (about 1,600,000 kilometers) long. Imagine that we make this wire into a huge loop, and then we connect its ends to the terminals of a battery, as shown in Fig. 10-1, driving current through the wire.

10-1   We can use a huge, imaginary loop of wire to illustrate the principle of inductance. ...

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