Question

Considering a long current carrying solenoid. Among the following statements, the incorrect statement is :

• A. The field lines inside the solenoid are in the form of straight lines which indicates that the magnetic field is the same at all points inside the solenoid
• B. The strong magnetic field produced inside the solenoid can be used to magnetise a piece of magnetic material like soft iron, when placed inside the coil
• C. The pattern of the magnetic field associated with the solenoid is completely same as the pattern of the magnetic field around a bar magnet
• D. The N- and S-poles exchange position when the direction of current through the solenoid is reversed

Answer 1

The correct option is C

The pattern of the magnetic field associated with the solenoid is completely same as the pattern of the magnetic field around a bar magnet

The pattern of the magnetic field associated with the solenoid is similar to the magnetic field around a bar magnet, except near the edges. Near the edges there is a slight difference in the pattern of magnetic field lines of these two.