Magnetism and electromagnetismQuestion 167 of 1506

Why do magnetic lines of force spread apart as they leave the poles?

  1. They are attracted to the air
  2. They are pulled by the Earth
  3. They are stronger at the poles
  4. They repel each other
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Correct answer: They repel each other

The lines repel each other, so they diverge instead of staying parallel or collapsing together.

Source: Electrical Fundamentals Competency (Industry Training Authority of BC), 3.1: Magnetic Fields

Practice magnetism and electromagnetism

Questions last reviewed: 18 October 2026