Diagram 1 shows a wire coil P positioned between the poles of a magnet. The two ends of coil P are linked to a battery through slip rings. Diagram 2 shows a wire coil Q positioned between the poles of another magnet. The two ends of coil Q are linked to a battery through a split-ring commutator. What occurs in coils P and Q?
- Acoil P continuously turns anticlockwise; coil Q makes one quarter turn anticlockwise then stops
- Bcoil P continuously turns clockwise; coil Q makes one quarter turn clockwise then stops
- Ccoil P makes one quarter turn anticlockwise then stops; coil Q continuously turns anticlockwise
- Dcoil P makes one quarter turn clockwise then stops; coil Q continuously turns clockwise