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1.

Inductance is indirectly proportional to the square of the number of turns, the permeability, and the cross-sectional area of the core.

Answer» Some factors that affect the inductance of a coil include: 1. The inductance is proportional to the square of the number of turns; 2. The inductance increases directly as the permeability of the core material increases; 3. The inductance increases directly as the cross-sectional area increases; and 4. The inductance decreases as its length increases.