What does magnetic flux linkage measure?

Magnetic flux linkage measures the interaction of magnetic flux through a coil of wire, which is directly related to the number of turns of wire linked to that flux. When a coil of wire is placed in a magnetic field, the amount of magnetic flux that passes through each turn of the coil contributes to the overall flux linkage. This quantity is essential in understanding how electromagnetic induction works, where changes in magnetic flux induce an electromotive force (emf) in the coil.

The measure of magnetic flux linkage is found by multiplying the magnetic flux (the total magnetic field passing through the coil) by the number of turns in the coil. Hence, it indicates not just the presence of a magnetic field but how it interacts with the physical arrangement of the wire itself, making option B the correct interpretation of what magnetic flux linkage signifies.