Two soft-iron rods are placed end-to-end inside a coil. The coil is connected to a battery.
The connections from the battery to the coil are now reversed.
What happens to the soft-iron rods in each case?
battery connections as shown:rods attract / battery connections reversed:rods attract
2 )
battery connections as shown:rods attract / battery connections reversed:rods repel
3 )
battery connections as shown:rods repel / battery connections reversed:rods attract
4 )
battery connections as shown:rods repel / battery connections reversed:rods repel
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