Red Seal Electrician Practice
Magnetism and electromagnetismQuestion 871 of 1506

What is magnetic saturation?

  1. The core loses all of its magnetism.
  2. More applied force produces little extra flux density in the material.
  3. The flux density falls to zero as force rises.
  4. The flux density rises in direct proportion to force.
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Correct answer: More applied force produces little extra flux density in the material.

As fewer atoms are left to align, it takes more and more force to gain a little more flux density.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 14.4: Permeability and Saturation

Practice magnetism and electromagnetism

Questions last reviewed: 18 October 2026