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Why a coil turns

Why a coil turns

Rectangular coil between N and S poles showing opposite forces on the two sides and an axis of rotation A current-carrying wire in a magnetic field experiences a force. When the wire is bent into a rectangular coil, the two long sides carry current in opposite directions, so the magnetic forces on them are opposite too.

4.5.5 The d.c. motor Lesson

  1. IGCSE
  2. /Physics
  3. /4.5.5 The d.c. motor

Step-by-step lessons on CIE IGCSE Physics 4.5.5 The d.c. motor. Each one builds up to exam-style questions. Build a strong foundation in mechanics and electricity before tackling the more mathematically demanding astrophysics and nuclear topics.

Lessons