Can a freely suspended current-carrying solenoid stay in any direction? Justify your answer. What will happen when the direction of current in the solenoid is reversed? Explain.

(N/A) current-carrying solenoid behaves like a bar magnet because it produces a magnetic field similar to that of a magnet.
Therefore,when suspended freely,it will align itself in the $North-South$ direction,just like a freely suspended magnet.
When the direction of the current in the solenoid is reversed,the polarity of the magnetic poles at the ends of the solenoid is also reversed.
As a result,the solenoid will rotate by $180^{\circ}$ to realign itself with the Earth's magnetic field.