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IB Physics SL D.3.5 Force on current conductor

IB Physics SL D.3.5 Force on current conductor
IB Physics syllabusFirst assessment 2025

Practise calculating and predicting the magnetic force on current-carrying conductors, rods and circuit sections in uniform fields.

How this is tested

  • calculate force or current from F = BIL when a wire or rod is at right angles to a uniform magnetic field
  • use a circuit-and-field diagram to determine the force direction on a rod or wire and predict the resulting motion
  • apply changes in current or force data to determine B from the gradient-like relation between F and I for fixed L
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