​Which of the following statements is/are correct for a current carrying solenoid?
(i) It can be used to magnetise a piece of soft iron.
(ii) It acts like a bar magnet
(iii) The field lines are concentric circles​

Correct option is D

The correct answer is option (D) Both (i) and (ii)

A magnetic field is a field produced by moving electric charges (currents) or by magnetic materials. It exerts a force on other moving charges or magnetic materials within the field.

Information Booster :-

• It can be used to magnetize a piece of soft iron: When a current-carrying solenoid is placed inside or near a piece of soft iron, the solenoid creates a magnetic field that magnetizes the iron. The soft iron becomes a temporary magnet due to the magnetic field produced by the solenoid.
  
• It acts like a bar magnet: A current-carrying solenoid creates a magnetic field that has a definite north and south pole, just like a bar magnet. The ends of the solenoid behave as the poles, and the magnetic field inside the solenoid is uniform, similar to the field inside a bar magnet.