10.3 Magnetic Flux Linkage

10.3 Magnetic Flux Linkage

Magnetic flux linkage is a key concept in electromagnetism, particularly in the study of inductance and electromagnetic induction. Magnetic flux linkage refers to the product of the magnetic flux through a coil and the number of turns in the coil. It essentially measures how much magnetic flux is linked with the coil due to its multiple turns, and is an important factor in understanding how coils and inductors operate in electrical circuits.

where $\phi_{B}$ is the magnetic flux through a single loop of area $A$ and $N$ is the total number of turns of the coil. Magnetic flux linkage plays a crucial role in the design and operation of transformers, electric motors, generators, and inductors. This concept is particularly important in Faraday's law of electromagnetic induction, which we will explore later in this chapter.

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A magnetic strip on the ATM card contains millions of tiny magnetic domains held together by a resin binder. The machine reads the information encoded on the magnetic strip and it makes your access to your account.