Red Seal Electrician Practice
Magnetism and electromagnetismQuestion 171 of 1506

The current in a conductor is reversed. What happens to the lines of force around it?

  1. They circle the conductor the other way
  2. They vanish while the current flows
  3. They straighten out along the wire
  4. They keep the same direction as before
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Correct answer: They circle the conductor the other way

The direction of the lines follows the direction of electron flow. Reverse the current and the lines reverse too.

Source: Electrical Fundamentals Competency (Industry Training Authority of BC), 3.2: Electricity and Magnetism

Practice magnetism and electromagnetism

Questions last reviewed: 18 October 2026