Red Seal Electrician Practice
Magnetism and electromagnetismQuestion 892 of 1506

A coil is rewound on a core that has a larger cross-section area. What happens to the inductance?

  1. It decreases.
  2. It stays the same.
  3. It falls to zero.
  4. It increases.
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Correct answer: It increases.

A larger area gives less opposition to flux for the same ampere-turns.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 15.3: Factors Affecting Inductance

Practice magnetism and electromagnetism

Questions last reviewed: 18 October 2026