A simple d.c. electric motor has a rectangular coil of wire between the poles of a magnet. The coil is connected to a battery through a split-ring commutator and two brushes.
Explain how the motor produces continuous rotation in one direction.
Your answer should refer to magnetic fields, the forces on the coil and the split-ring commutator.
86 exam-style questions on Edexcel GCSE Physics 12.3 The motor effect, covering 12.3.1 The motor effect, 12.3.2 Fleming's left-hand rule, 12.3.3 Force on a conductor, and 12.3.4 Electric motors. Each one has a worked solution and a mark scheme showing where the marks go.