Magnetism and electromagnetismQuestion 169 of 1506

Inside a bar magnet, what do the magnetic lines of force do?

End at the south pole and restart at the north
Stop at the middle of the magnet
Pass through it and close their loops
Fade out because the steel blocks the field

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Correct answer: Pass through it and close their loops

Flux lines have no ends. They continue through the magnet and return to complete a loop.

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

Questions last reviewed: 18 October 2026

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