Two soft-iron rods are arranged in a line, end to end, within a coil. The coil is attached to a battery. The battery connections 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