Two soft-iron rods are positioned end-to-end within a coil. The coil is attached to a battery. The leads from the battery to the coil are then swapped over. What occurs to the soft-iron rods in each situation?
- Arods attract; rods attract
- Brods attract; rods repel
- Crods repel; rods attract
- Drods repel; rods repel