Magnetic flux density (A-level only)
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Motor effect and direction

Motor effect and direction

Magnetic motor effect diagram with field downward from a north pole to a south pole, current to the right, force into the page, and an inset showing Fleming's left-hand rule.

When a current-carrying wire is placed in a magnetic field, it experiences a force. This is the motor effect, caused by the wire's own magnetic field interacting with the external field.

Magnetic flux density (A-level only) Lesson

  1. A Level
  2. /Physics
  3. /Magnetic flux density (A-level only)