Explain why a simple electric motor continues to turn in the same direction when there is a current in the coil (6 marks)

This question would be illustrated with the correct diagram to enhance understanding. The question is for 6 marks, so 6 key points need to be made. When the current is switched on, a magnetic field is generated around the wire (1). The magnetic field from the current interacts with the magnetic field generated by the permanent magnet (2). Therefore, there is a force acting on each side of the coil due to the motor effect (3). The forces on each side of the coil are in the opposite directions to one another, so the coil turns (4). The commutator reverses the current around the coil with every half turn (5) meaning that the coil is pushed in the same direction every half turn, and thus continues to rotate (6).
This question calls on prior knowledge of magnetic fields, the motor effect and Fleming's left-hand rule. If there is any confusion around these topics, this will be addressed when required. This question is only necessary for students taking the higher paper.