The most effective way of significantly increasing the inductance of a coil is to
A) increase the number of turns
B) reduce the length of the coil
C) increase its cross-sectional area
D) insert a ferromagnetic core

Question

Quizplus · Accepted Answer

Inserting a ferromagnetic core in the coil significantly increases the inductance, as the magnetic field lines become concentrated in the core material, leading to a higher magnetic flux density and thus, a higher inductance. The other options also increase the inductance to some extent, but not as significantly as inserting a ferromagnetic core.

The Most Effective Way of Significantly Increasing the Inductance of a Coil