At the two ends of a long straight solenoid, N- pole and S- pole are formed for a current. The wrong statement among the following is:

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The field lines within the solenoid are curved lines, indicating that the magnetic field is the different at all sites within the solenoid.

The magnetic field pattern associated with the solenoid differs from the magnetic field pattern associated with the bar magnet.

When a piece of magnetic material, such as soft iron, is placed within the coil, the strong magnetic field created inside the solenoid may be utilized to magnetize it.

When the current flowing through the solenoid is reversed, the N and S poles swap positions.

answer is A, C.

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Detailed Solution

Solenoid: An electromagnet that creates a regulated magnetic field by winding a coil into a closely packed helix.

When an electric current is sent through it, it produces a homogeneous magnetic field.

Question Image

Inside, the field remains constant.

As illustrated in the image, the pattern of field lines generated by the solenoid mimics that of a current-carrying conductor.

When a piece of magnetic material, such as soft iron, is introduced into the coil of a solenoid, it harnesses the potent magnetic field generated within the solenoid to effectively magnetize the material.

Inside the solenoid, the magnetic field lines align in a straight pattern, illustrating a consistent and uniform magnetic field throughout its length.

Notably, when the direction of the electric current flowing through the solenoid is reversed, a fascinating phenomenon occurs: the North (N) and South (S) poles of the solenoid's magnetic field also interchange their positions, reflecting the intricate interplay between current flow and magnetic polarity.

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