CAIE IGCSE Physics Force Field and Current Directions
Practise applying the motor-effect direction rule to wires and coil sides, including into-page notation, pole labels and single or double reversals.
- Syllabus
- 2026–2028
- Course
- Physics 0625
Exam points
- apply Fleming's left-hand rule with field from north to south and conventional current direction
- infer the missing force, field or current direction from the other two mutually perpendicular arrows
- reverse one of current or field to reverse force, while reversing both leaves force unchanged
4.5.4.2—Relative directions of force, magnetic question 1
Fig. 9.1 shows a simple direct current (d.c.) electric motor. The coil rotates about the axis when there is a current in the coil. The coil is connected to the rest of the circuit by the brushes.
Fig. 9.1
On Fig. 9.1, draw a pair of arrows to show which way the coil rotates. Explain the direction you have chosen.
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